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

The given equation is p = 2q.

Here, p is the dependent variable and q is the independent variable.

So, p will be on the y-axis and q on the x-axis.

When q = 0,

p = 2 (0) = 0

When q = ,

p = 2 = 1

When q = 1,

p = 2 (1) = 2

When q = 2,

p = 2 (2) = 4

The points in the graph are

A = (0, 0)

B = ( , 1)

C = (1, 2)

D = (2, 4)

The line segments are

A) When q = 3,

p = 6 (from the graph)

B) When p = 8,

p = 4 (from the graph)