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.

Step 1 – The x axis goes from –2 to 2. We can use these values to find the values of y for the graph. Step 4 – Repeat this process for the remaining values, where x = -1, x = 0, x = 1 and x = 2.