## Andhra Pradesh Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Textbooks Solutions PDF

Andhra Pradesh State Board STD 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Books Solutions with Answers are prepared and published by the Andhra Pradesh Board Publishers. It is an autonomous organization to advise and assist qualitative improvements in school education. If you are in search of AP Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Books Answers Solutions, then you are in the right place. Here is a complete hub of Andhra Pradesh State Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 solutions that are available here for free PDF downloads to help students for their adequate preparation. You can find all the subjects of Andhra Pradesh Board STD 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Textbooks. These Andhra Pradesh State Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Textbooks Solutions English PDF will be helpful for effective education, and a maximum number of questions in exams are chosen from Andhra Pradesh Board.## Andhra Pradesh State Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Books Solutions

Board | AP Board |

Materials | Textbook Solutions/Guide |

Format | DOC/PDF |

Class | 9th |

Subject | Maths |

Chapters | Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 |

Provider | Hsslive |

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## AP Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Textbooks Solutions with Answer PDF Download

Find below the list of all AP Board Class 9th Maths Chapter 6 Linear Equation in Two Variables Ex 6.3 Textbook Solutions for PDF’s for you to download and prepare for the upcoming exams:## AP State Syllabus 9th Class Maths Solutions 6th Lesson Linear Equation in Two Variables Exercise 6.3

Question 1.

Draw the graph of each of the following linear equations.

i) 2y = – x + 1

ii) – x + y = 6

iii) 3x + 5y = 15

iv) 𝑥2−𝑦3=3

Solution:

i) 2y = – x + 1

⇒ x + 2y = 1

ii) – x + y = 6

iii) 3x + 5y = 15

iv) 𝑥2−𝑦3=3

⇒ 3𝑥−2𝑦6=3

⇒ 3x – 2y = 18

Question 2.

Draw the graph of each of the following linear equations and answer the following questions.

i) y – x

ii) y = 2x

iii) y = – 2x

iv) y = 3x

v) y = – 3x

Solution:

i) y = x

x | 1 | 2 |

y | 1 | 2 |

(x, y) | (1, 1) | (2, 2) |

ii) y = 2x

x | 1 | 2 |

y | 2 | 4 |

iii) y = – 2x

x | 1 | 2 |

y | -2 | -4 |

iv) y = 3x

x | 1 | 2 |

y | 3 | 6 |

v) y = – 3x

x | 1 | 2 |

y | -3 | -6 |

i) Are all these equations of the form y = mx; where m is a real number ?

Solution:

Yes. All the equations are of the form y = mx where m e R.

ii) Are all these graphs passing through the origin ?

Solution:

Yes. All these lines pass through the origin.

iii) What can you conclude about these graphs ?

Solution:

All lines of the form y = mx, pass through the origin.

Question 3.

Draw the graph of the equation 2x + 3y = 11. Find from the graph value of y when x = 1.

Solution:

x | 1 | 4 |

y | 3 | 1 |

From the graph; when x = 1 then y = 3.

Question 4.

Draw the graph of the equation y – x = 2. Find from the graph

i) the value of y when x = 4

ii) the value of x when y = – 3

Solution:

The given equation is y – x = 2 or – x + y = 2

x | 0 | -2 |

y | 2 | 0 |

i) If x = 4 then y = 6 (∵ from the graph)

ii) When y = – 3 then x = – 5 (∵ from the graph)

Question 5.

Draw the graph of the equation 2x + 3y = 12. Find the solutions from the graph,

(i) Whose y-coordinate is 3 (OR) Whose y-coordinate is 2

(ii) Whose x-coordinate is – 3

Solution:

The given equation is 2x + 3y = 12

x | 0 | 6 |

y | 4 | 0 |

i) From the graph when y = 3 then 2x + 3(3) = 12 ⇒ 2x + 9 = 12 ⇒ 2x = 3 ⇒ x = 32 ; solution is (32 , 3) (OR) When y = 2 then 2x + 3(2) = 12 ⇒ 2x + 6 = 12 ⇒ 2x = 6 ⇒ x = 3 solution is (3, 2),

ii) From the graph when x = – 3 then y = 6; solution is (- 3, 6)

Question 6.

Draw the graph of each of the equations given below and also find the coordinates of the points where the graph cuts the coordinate axes.

i) 6x – 3y = 12

Solution:

6x – 3y = 12

x | 0 | 2 |

y | -4 | 0 |

From the graph the line cuts the X-axis at (2, 0) and Y-axis at (0, – 4).

ii) -x + 4y = 8

Solution:

x | 0 | -8 |

y | 2 | 0 |

From the graph the line cuts the X-axis at (- 8, 0) and Y -axis at (0, 2).

iii) 3x + 2y + 6 = 0

Solution:

3x + 2y + 6 = 0

x | 0 | -2 |

y | -3 | 0 |

From the graph the line cuts the X-axis at (- 2, 0) and Y -axis at (0, -3).

Question 7.

Rajiya and Preethi two students of class IX together collected ₹1000 for the Prime Minister Relief Fund for victims of natural calamities. Write a linear equation and

draw a graph to depict the statement. Clfp)

Solution:

Let Rajiya’s contribution to P.M.R.F be = ₹ x

Preethi’s contribution to P.M.R.F be = ₹ y

Then by problem x + y = 1000

x + y = 1000 | ||

x | 200 | 300 |

y | 800 | 700 |

Question 8.

Gopaiah sowed w heat and paddy in two fields of total area 5000 sq. meters. Write a linear equation and draw a graph to represent the same.

Solution: Let the wheat be sowed in a land equal to x sq.m,

and the paddy be sowed in a land equal to y sq.m.

∴ By problem x + y = 5000

x + y = 5000 | ||

x | 1000 | 2000 |

y | 4000 | 3000 |

Question 9.

The force applied on a body of mass 6 kg. is directly proportional to the acceleration produced in the body. Write an equation to express this observation and draw the graph of the equation.

Solution:

Let the lorce = f; mass = 6 kg; acceleration = a

By problem f ∝ a or f = m . a ⇒ f = 6a

f = 6a | ||

a | 2 | 3 |

f | 12 | 18 |

Question 10.

A stone is falling from a mountain. The velocity of the stone is given by v = 9.8t.

Draw its graph and find the velocity of the stone 4 seconds after start.

Solution:

Given that, the velocity of the stone v = 9.8 t

v = 9.8t | ||

v | 49 | 98 |

t | 5 | 10 |

The velocity after 4 seconds = v = 9.8 × 4 = 39.2 m/sec^{2}.

Question 11.

In an election 60 % of voters cast their votes. Form an equation and draw the graph for this data. Find the following from the graph.

i) The total number of voters, if 1200 voters cast their votes,

ii) The number of votes cast, if the total number of voters are 800.

[Hint: If the number of voters who cast their votes be ‘x’ and the total number of voters be ‘y’ then x = 60 % of y.]

Solution:

Let the total number of votes be = y

Then the number of voters who cast their votes = x

By problem x = 60 % of y

x | 1200 | 480 |

y | 2000 | 800 |

i) From the graph when x = 1200, then y = 2000

ii) From the graph when y = 800 then x = 480

Question 12.

When Rupa was born, her father was 25 years old. Form an equation and draw a graph for this data. From the graph find

i) The age of the father when Rupa is 25 years old.

ii) Rupa’s age when her father is 40 years old.

Solution:

Let her father’s age be = x years.

and Rupa’s age be = y years

By problem x – y = 25 years

x | 40 | 50 |

y | 15 | 25 |

i) From the graph age of the father when Rupa is 25 years is 50 years.

ii) Rupa’s age when her father is 40 years is 15 years.

Question 13.

An auto charges ₹15 for first kilometre and ₹ 8 each for subsequent kilometre. For a distance of x km. an amount of ₹y is paid. Write the linear equation representing this information and draw the graph. With the help of graph find the distance travelled if the fare paid is ₹55. How much would have to be paid for 7 kilometres?

Solution:

Charge for the first kilometre = ₹15

Charge for the subsequent kilometres = ₹ 8 per km.

Amount paid = ₹ y when the distance travelled is x km

∴ By problem y = 15 + 8x

∴ 8x – y + 15 = 0

x | 2 | 1 |

y | 31 | 23 |

i) When y = 55 then x = 5

ii) From the graph when x = 7 then y = 71

Question 14.

A lending library has fixed charge for the first three days and an additional charges for each day thereafter. John paid ₹ 27 for a book kept for seven days. If the fixed charges be ₹ x and subsequent per day charges be ₹ y; then write the linear equation representing the above information and draw the graph of the same. From the graph if the fixed charge is ₹ 7, find the subsequent per day charge. And if the per day charge is ₹ 4, find the fixed charge, (charge is ₹7)

Solution:

John kept a book for 7 days. He paid ₹ 27

For first three days = ₹ x (fixed)

For the last four days = ₹ 4y (? y for a day)

By problem x + 4y = 27

x | 3 | 11 | 7 |

y | 6 | 4 | 5 |

When x = 7 then y = 5

When y = 4 then x = 11

Question 15.

The parking charges of a car in Hyderabad Railway station for first two hours is ₹ 50 and ₹10 for each subsequent hour. Write down an equation and draw the graph. Find the following charges from the graph.

i) For three hours ii) For six hours iii) How many hours did Rekha park her car if she paid ₹ 80 as parking charges ?

Solution: Let the total money paid be = ₹ y

Parking charges for the first two hours = ₹ 50

Parking charges for total x hours @ ₹10 per hour = 50 + (x – 2) 10

= 50 + 10x – 20

= 10x + 30

∴ By problem y = 10x + 30

x | 3 | 5 | 6 |

y | 60 | 80 | 90 |

i) For three hours = 50 + 10 × 1 = ₹ 60

[ ∵ From the graph we see the same]

ii) For six hours = 50 + 10 × 4 = 50 + 40 = ₹ 90

iii) Rekha parked her car for 5 hours.

Question 16.

Sameera was driving a car with uniform speed of 60 kmph. Draw distance – time graph. From the graph find the distance travelled by Sameera in

i) 12 hours

ii) 2 hours

iii) 312 hours

Solution:

Speed of the car = 60 kmph

Let the time taken be = x hours

Then the total distance travelled be = y hours

By problem 60x = y or 60x – y = 0

x | 2 | 4 | 5 |

y | 120 | 240 | 300 |

ii) Distance travelled in 112 hours = 120 km

ii) Distance travelled in 2 hours = 120 km

iii) Distance travelled in 312 hours = 210 km

Question 17.

The ratio of molecular weight of Hydrogen and Oxygen in water is 1 : 8. Set up an equation between Hydrogen and Oxygen and draw its graph. From the graph find the quantity of Hydrogen if Oxygen is 12 grams. And quantity of Oxygen if

Hydrogen is 32 grams.

[Hint : If the quantities of hydrogen and oxygen ‘x’ and ‘y’ respectively, then

x : y = 1 : 8 ⇒ 8x = y]

Solution:

Let the quantity of Hydrogen = x grams

And the quantity of Oxygen = y grams

By problem 8x = y ⇒ 8x – y = 0

x | 1 | 2 | 4 | 5 |

y | 8 | 16 | 32 | 40 |

From the graph, the quantity of Hydrogen if Oxygen is 12 gm = 32 g.

From the graph, the quantity of Oxygen if Hydrogen is 32 g = 12 g.

Question 18.

In a mixture of 28 litres, the ratio of milk and water is 5 : 2. Set up the equation between the mixture and milk. Draw its graph. By observing the graph find the quantity of milk in the mixture.

[Hint: Ratio between mixture and milk = 5 + 2:5 = 7:5]

Solution:

Let the quantity of milk in the mixture be = x lit.

quantity of the mixture = y lit.

Ratio of the milk and water = 5:2

Sum of the terms of the ratio = 5 + 2 = 7

Quantity of milk x = 57 y lit.

7x = 5y ⇒ 7x – 5y = 0

x | 10 | 20 | 25 |

y | 14 | 28 | 35 |

From the graph quantity of milk in the mixture = 20 lit.

Question 19.

In countries like U.S.A. and Canada temperature is measured in Fahrenheit whereas in countries like India, it is measured in Celsius. Here is a linear equation that converts Fahrenheit to Celsius F = 95 C + 32

i) Draw the graph of the above linear equation having Celsius on X-axis and Fahrenheit on Y-axis.

ii) If the temperature is 30°C, what is the temperature in Fahrenheit ?

iii) If the temperature is 95°F, what is the temperature in Celsius ?

iv) Is there a temperature that has numerically the same value in both Fahrenheit and Celsius ? If yes, find it.

Solution:

i) Given that F = 95 C + 32

C | 20 | 30 | 35 | -40 |

F | 68 | 86 | 95 | -40 |

If C = 20, F = 95 × 20 + 32 = 68

If c = 30, F = 95 × 30 + 32 = 86

If C = 35, F = 95 × 35 + 32 = 95

If C = -40, F = 95 × (-40) + 32 = -40

ii) From the graph 30°C = 86°F

iii) 95°F = 35°C

iv) When C = – 40 then F = – 40

## AP Board Textbook Solutions PDF for Class 9th Telugu

- AP Board Class 9 Textbook Solutions PDF
- AP Board Class 9 Maths Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 1 Real Numbers Ex 1.1 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 1 Real Numbers Ex 1.2 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 2 Polynomials and Factorisation Ex 2.5 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 3 The Elements of Geometry Ex 3.1 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 3 The Elements of Geometry InText Questions Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 4 Lines and Angles Ex 4.1 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 4 Lines and Angles Ex 4.2 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 5 Co-Ordinate Geometry Ex 5.1 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 5 Co-Ordinate Geometry Ex 5.2 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 5 Co-Ordinate Geometry Ex 5.3 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 5 Co-Ordinate Geometry InText Questions Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 6 Linear Equation in Two Variables Ex 6.1 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 6 Linear Equation in Two Variables Ex 6.2 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 6 Linear Equation in Two Variables Ex 6.4 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 6 Linear Equation in Two Variables InText Questions Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 7 Triangles Ex 7.1 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 9 Statistics Ex 9.1 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 10 Surface Areas and Volumes Ex 10.1 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 12 వృత్తాలు Ex 12.2 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 12 వృత్తాలు Ex 12.5 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 12 వృత్తాలు InText Questions Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 13 జ్యామితీయ నిర్మాణాలు Ex 13.2 Textbook Solutions PDF
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- AP Board Class 9 Maths Chapter 15 గణితములో నిరూపణలు Ex 15.2 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 15 గణితములో నిరూపణలు Ex 15.3 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 15 గణితములో నిరూపణలు Ex 15.4 Textbook Solutions PDF
- AP Board Class 9 Maths Chapter 15 గణితములో నిరూపణలు InText Questions Textbook Solutions PDF

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