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)


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