



 
Hi Penehafo, Since you know that the graph is a straight line you need only plot two points on the line and then join them using a ruler. I am going to illustrate using a different equation $y = 3x + 2.$ I can use whatever two points on the graph that I choose so I am going to choose points that make the arithmetic easy. When $x = 0$ we have $y = 3 \times 0 + 2 = 2$ and hence the point $(0,2)$ is on the graph. When $x = 1$ we have $y = 3 \times 1 + 2 = 1$ and hence the point $(1,1)$ is on the graph. Plotting these points gives and connecting the points I get Now try your equation, 



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