HELP EASY PLS ITS TIMED

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.

Ineed me i stuck and i don’t want to get it wrong

Find the area of an equilateral triangle with a side of 6 inches