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Mathematics 20 Online
OpenStudy (anonymous):

A line contains points (2, -2) and (-4, 1). Another line graphed in the same coordinate plane contains points (1, 2) and (-3, 4). Based on the slopes of these lines, are they parallel, perpendicular or neither?

OpenStudy (anonymous):

Firstly calculate both slopes, according to the formula: slope = (y2-y1)/(x2-x1). Then, do you know conditions for lines to be parallel/perpendicular?

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