Given points a(5, 3) and z(-1, 7). 16 a. what is the slope of line az? b. what is the slope of the line parallel to line az? c. what is the slope of the line perpendicular to line az?

To find the slope of a line given two points, use: (y2 - y1) / (x2 - x1)

A. (7-3) / (-1-5) = (4/-6) or -2/3

B. The slope of a line parallel to another line will be the same, so -2/3

C. The slope of a line perpendicular to another line will be the reciprocal and the sign will also change. Because the slope was -2/3, the slope of the perpendicular changes to 3/2 (positive)

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