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Mathematics 7 Online
OpenStudy (anonymous):

What is the slope of the line that is perpendicular to the line that passes through (-2, 7) and (4, 9)?

OpenStudy (16shuston):

What you want to do first is set up your slope formula which is y/x. to find slope take 9-7 over 4--2. Then find b in your y=mx+b equation

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