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If lmn=xyz, which congruences are true by cpctc? check all that apply

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?