Help plz i suck at proofs

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.

Which of the following vectors are orthogonal to (2,1)? check all that apply

Savannah had 40 iris blooms last year this year she had 15% more iris blooms how many more hours blooms did savannah have this year