Question

(i) Draw the graph (straight line) given by equation x − 3y = 18.

(ii) If the straight line drawn passes through the points (m,−5) and (6,n); find the values of m and n.

Answer 1

(i) According to the question,

$x-3y=18\Rightarrow -3y=18-x\Rightarrow 3y=x-18$

The table for x-3y=18 is

$\begin{array}{ccccc}x& 9& 0& 6& 3\\ y& -3& -6& -4& -5\end{array}$


(ii) Hence, from the graph, we can conclude that m=3 and n=-4.