What happens if the lines are coinciding and are on top of each other? Go back to the applet and investigate.

Put these two general form equations into the applet and see what happens.

4x + 2y = 8          2x + y = 4

This activity might not be viewable on your mobile device.Interactive exercise. Assistance may be required.Solving Systems of Linear Equations

What do you think this means? Record your answer and then check below.

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Check Your Answer

Since the lines are the same, any x-value will make a true statement. There are many, many answers. We say there are an infinite number of solutions.Close Pop Up