Need help due soon thx

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.

When y’all answer can y’all explain too !

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days