Plot a line graph for the variables p and q where p is two times q i.e, the equation is p = 2q. Then find.

(a) the value of p when q = 3
(b) the value of q when p = 8

Solution:

The graph of the equation p = 2q is drawn below. The value of p and q are obtained from the graph:

(a)The value of p = 6 when q = 3

(b) The value of q = 4 when p = 8

✦ Try This: Plot a line graph for the variables p and q where p is two times q i.e, the equation is p = 4q. Then find.

(a) the value of p when q = 4

(b) the value of q when p = 12

(a)When q = 4, p = 16

(b) when p = 12, q = 3

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 15

NCERT Exemplar Class 8 Maths Chapter 12 Problem 56

Plot a line graph for the variables p and q where p is two times q i.e, the equation is p = 2q. Then find. (a) the value of p when q = 3 (b) the value of q when p = 8

Summary:

The plot of the graph p = 2q gives the value of p = 6 when q = 3 and gives the value of q = 2 when p = 4.

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