Question

Question 56(ii)
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 the value of q when p=8.

Answer 1

If p=2, then q=$\frac{p}{2}=\frac{2}{2}=1$
If p=4, then q=$\frac{p}{2}=\frac{4}{2}=2$
If p=6, then q=$\frac{p}{2}=\frac{6}{2}=3$
If p=8, then q=$\frac{p}{2}=\frac{8}{2}=4$
Hence, table for the graph
$\begin{array}{ccccc}p& 2& 4& 6& 8\\ q& 1& 2& 3& 4\end{array}$



When p=8, the value of q is 4.