Question

Consider m = y2 - y1/x2 - x1 . Which x1 and x2-values would determine that the line is vertical? Justify your answer.

x1 = 5 and x2 = -5; Substituting opposite values in for undefined.

B) x1 = 5 and x2 = 0; Substituting zero in for x2 will make the slope undefined. A vertical line's slope is undefined. Eliminate

C) x1 = 5 and x2 = -5; Substituting opposite values in for x1 and x2 will make the slope zero. A vertical line's slope is zero.

D) x1 = 5 and x2 = 5; Substituting the same value in for both x1 and x2 will make the slope undefined. A vertical line's slope is undefined.

Answer 1

Which one do you think it is?

Answer 2

it a

Answer 3

I don't think so, I was going with D

Answer 4

it d