Question: a. Why are the lines whose equations are y = 1/3 x + 1 and y = -3x - 2 perpendicular? b. Use a graphing

a. Why are the lines whose equations are y = 1/3 x + 1 and y = -3x - 2 perpendicular?
b. Use a graphing utility to graph the equations in a [-10, 10, 1] by [-10, 10, 1] viewing rectangle. Do the lines appear to be perpendicular?
c. Now use the zoom square feature of your utility. Describe what happens to the graphs. Explain why this is so.

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