RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions

RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions is part of RBSE Solutions for Class 8 Maths. Here we have given Rajasthan Board RBSE Class 8 Maths Chapter 12 Linear Graph Additional Questions.

Board RBSE
Textbook SIERT, Rajasthan
Class Class 8
Subject Maths
Chapter Chapter 12
Chapter Name Linear Graph
Exercise Additional Questions
Number of Questions 37
Category RBSE Solutions

Rajasthan Board RBSE Class 8 Maths Chapter 12 Linear Graph Additional Questions

I. Objective Type Questions

Question 1.
In a linear graph, the independent quantity is represented
(a) on x-axis
(b) on y-axis
(c) on x-y plane
(d) independent(RBSESolutions.com)quantity is not represented

Question 2.
Total number of quadrants are
(a) 1
(b) 2
(c) 3
(d) 4

Question 3.
Coordinates of origin are
(a) (1, 0)
(b) (0, 1)
(c) (1, 1)
(d) (0, 0)

RBSE Solutions

Question 4.
The point where x-axis and y-axis meet called
(a) (0, 0)
(b) (1, 1)
(c) (1,-1)
(d) (- 1,-1)

Question 5.
The distance between (3, 4) and origin is
(a) 3
(b) 4
(c) 5
(d) None of the above

Question 6.
The y-coordinate of each point on x- axis is
(a) 1
(c) 0
(b) – 1
(d) Any value

RBSE Solutions

Question 7.
x and y, both are positive
(a) in I quadrant
(b) in II quadrant
(c) in III quadrant
(d) in IV quadrant

Question 8.
The point (3, 0) lies
(a) on x-axis
(b) in first quadrant
(c) on y-axis
(d) in second quadrant

Question 9.
Perpendicular distance of a point from X-axis in a coordinate plane is called
(a) Ordinate
(b) Abscissa
(c) Coordinate
(d) Quadrant

Answers
1. (a)
2. (d)
3. (d)
4. (a)
5. (c)
6. (c)
7. (a)
8. (a)
9. (a).

RBSE Solutions

II. Fill in the blanks

Question 1.
Horizontal line is called___

Question 2
___ line is called y-axis.

Question 3.
Line, which is a complete unbreakable straight line is called ____

Question 4.
A relation between an independent(RBSESolutions.com)variable and___is represented by a graph.

Question 5.
x-axis, y-axis and origin O taken together are known as ___

Answers
1. x-axis
2. Vertical
3. linear graph
4. a dependent variable
5. Cartesian frame

RBSE Solutions

III. True/False Type Questions

Question 1.
The perpendicular distance from any point to y-axis is called abscissa.

Question 2.
The perpendicular distance from any point to x-axis is called ordinate.

Question 3.
The angle between(RBSESolutions.com)horizontal axis and vertical axis is 90°.

Question 4.
OX’ is positive direction of x-axis.

Answers
1. True
2. True
3. True
4. False.

RBSE Solutions

IV. Matching Type Questions

Part 1 Part 2
1. Other name of xy plane (a) X’OX
2. Horizontal line (b) Cartesian plane
3. (0, 0) are the coordinates of (c) abscissa = ordinate
4. On the line passing through origin (d) origin

Answers
1. ↔ (b)
2. ↔ (a)
3. ↔ (d)
4. ↔ (c)

V. Very Short Answer Type Questions

Question 1.
The cost of petrol is depend on the quantity of the petrol filled in a car. Which variable is independent here? Clarify.
Solution
Since the cost of petrol is depend on the(RBSESolutions.com)quantity of the petrol filled in a car, therefore quantity of petrol is independent variable.

Question 2.
Plot the following points on the graph paper and check whether those points lie on a straight line? (4, 0), (4, 2), (4, 2.5) (4, 6)
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-1
Yes, all given points lie on a straight line.

RBSE Solutions

Question 3.
Plot the following points on the graph paper and check whether they those points lie on a straight line.
K (2, 3), L (5, 3), M (5, 5), N (2, 5)
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-2
No, all given points do not lie on a straight line.

Question 4.
Plot the points A (2, 4) and B (10, 10) on a graph paper. Find the distance between these points using scale.
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-3
Distance AB = 10 units

RBSE Solutions

Question 5.
Plot the points A (3, 0), B (3, 3) and C (0, 3) on a Cartesian plane. Join. AB and BC. Write the name of the figure.
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-4
OABC is a square.

RBSE Solutions

VI. Short Answer Type Questions

Question 1.
Draw a line passing through (2, 3) and (3, 2). Write the coordinates of those points where this line intersecting the x-axis and y-axis.
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-5
Draw x-axis and y-axis. Write the points P (2, 3) and Q (3, 2). Join PQ and extend this line on both sides so that it can intersect x- axis on A and y-axis on B.
Then,
A → (5, 0)
B → (0, 5)

RBSE Solutions

Question 2.
Following table gives the number of enrolled students from class VI to X in a school

Class VI VII VIII IX X
No of students 15 20 16 18 22

Draw a graph using proper scale.
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-6

RBSE Solutions

Question 3.
Write the coordinates of the vertices of the figure drawn in graph.
Solution
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-7
(i)
O → (0, 0)
A → (2, 0)
B → (2, 2)
C → (0, 2)
(ii)
P → (6, 4)
Q → (9, 5)
R → (9, 7)
S → (6, 6)
(iii)
L → (12, 9)
M → (14, 9)
N → (14, 10)
T → (12, 10)

RBSE Solutions

Question 4.
The sell of a company in different years is shown in the following graph. Find
(a) the sell in year 2002
(b) The sell in year 2006
(c) The difference(RBSESolutions.com)between the sell of year 2002 and year 2006.
(d) In which year the sell was maximum?
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-8
Solution:
(a) Sell in year 2002 = Rs 4 crore
(b) Sell in year 2006 = Rs 8 crore
(c) The difference between the sell of year 2002 and year 2006
= 8 crore – 4 crore
= 4 crore
(d) There was maximum sell in year 2005.

Question 5.
Plot the following points on the graph paper. Write the name of figure. Give the reason of name
A (- 4, 4);
B (- 6, 0);
C (- 4, – 4);
D (- 2, 0)
Solution:
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-9
On measuring,
AB = BC = CD = DA = 4.5 cm.

RBSE Solutions

Question 6.
Write the coordinates of the point which is
(a) a mirror image of point (0, 4) in x-axis.
(b) a mirror image of point (- 3, – 5) in y-axis.
Solution
(a) The required point is (0, – 4).
(b) The required point is (3, – 5).
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-10

RBSE Solutions

Question 7.
According to the following table, draw the graph between time and simple interest

Time 1 yr 2 yr 3 yr 4 yr
Simple Interest (in Rs) 50 100 150 200

Solution
The required graph is given below :
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-11

Question 8.
Answer the following questions by seeing the graph given below
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-12
(i) Write coordinates of vertices A and D of square ABCD.
(ii) Write length of diagonal BD.
Solution
(i) Coordinates of vertex A = (4, 0)
Coordinates of Vertex D = (1, 3)
(ii) Length(RBSESolutions.com)of diagonal BD = 6 units

RBSE Solutions

Question 9.
According to the following table, draw a graph between side and perimeter of square

Side (in cm) 4 5 6 7
perimeter (in cm) 16 20 24 28

Solution.
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-13

Question 10.
Draw a linear graph between time and, distance shown in the following table.

Time (hrs) 3 6 9 12 15
Distance (in km) 15 30 45 60 75

Solution:
Scale let
x-axis, 1 large division = 3 hours
y-axis, 1 large division = 10 km.
We obtain a linear graph by joining the points A(3, 15), B(6, 30), C(9, 45), D(12, 60) and E(15, 75).
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-14

RBSE Solutions

Question 11.
Draw a linear graph between deposited money and interest earned given in following table.

Deposited money (in Rs) 2000 4000 6000 8000 10000
Interest earned (in Rs) 20 40 60 80 100

Solution
Scale let
x-axis, 1 large division = Rs 2,000 (sum deposited)
y-axis, 1 large division = Rs 10 (interest)
We obtain a linear graph by joining the points A(2000, 20), B(4000, 40), C(6000, 60), D(8000, 80) and E(10000, 100).
RBSE Solutions for Class 8 Maths Chapter 12 Linear Graph Additional Questions img-15

RBSE Solutions

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