In this instance, x=0. Do the same for x=1, x=2, x=3 and x=4. Image caption, STEP 3 - Draw a graph and label the x axis 1 to 4 and the y axis 1 to 9. A linear equation is represented as a line graph.

Simultaneous equations are often two linear equations that can be plotted on a set of axes. Each linear equation can be drawn as a line on a graph. The co-ordinate where the two lines intersect ...

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