Line ab and cd have the following points: a(2, 4), b(9, 8), c(-1, 2), and d(3, -5). are the lines parallel, perpendicular, or neither? perpendicular neither parallel

We are given coordinates of A, B, C and D :

A(2, 4), B(9, 8), C(-1, 2), and D(3, -5).

Now, we need to find the slopes of AB and CD.

Slope of AB is :

.

Slope of CD is:

.

Slope of CD is negative reciprocal of slope of slope of AB.

this doesn't make sense lol

one that is bigger than 3 1/2