Question

Determine whether AB and CD are parallel, perpendicular, or neither.

A(1,5), B(4,4), C(9,-10), D(-6,-5)

Answer 1

Answer:Parallel

Explanation:

Remember the formula

y2-y1/x2-x1

We plug in AB

4-5/4-1=-1/3 —> AB

We plug in for CD

-5-(-10)/-6-9=5/-15 which we can simplify to -1/3 ——> CD

So they are Parallel because they have the same slope.
that’s all let me know if questions!