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Mathematics 17 Online
OpenStudy (anonymous):

The line y = 0.15x + 0.79 represents an estimate of the average cost of gasoline each year. The line 0.11x - y = -0.85 estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your reasoning.

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