Question

Plot the graphs of the following equations on the same co-ordinate system. [4 MARKS]

(i) y = 2x - 3

(ii) x + y = 6

Answer 1

Graphs: 2 Marks each

First we should prepare table for y = 2x - 3 and draw the corresponding graph. Then we should prepare table for x + y = 6, i.e. y = - x + 6 and draw the corresponding graph.

y = 2x - 3

$\begin{array}{cccc}x& 0& 1& 2\\ y& -3& -1& 1\\ (x,y)& (0,-3)& (1,-1)& (2,1)\end{array}$

x + y = 6 i.e. y = -x + 6

$\begin{array}{cccc}x& 0& 1& 2\\ y& 6& 5& 4\\ (x,y)& (0,6)& (1,5)& (2,4)\end{array}$