The slope of a line passing through the points (-1, 5) and (3, 5) is?

Question

A) no slope

B) 0

C) 5/4

Answer 1

Hi Lindsey;

(-1, 5) and (3, 5)

Slope is the change-of-y divided by change-of-x...

m=(y-y₁)/(x-x₁)

Either point can be denoted as ₁.

m=(5-5)/(-1-3)

m=0/-4

The change of y is zero.  It is a straight, horizontal line.

Answer B

If the change of x is zero, it would be a straight, vertical line with an undefined slope because zero cannot be a denominator/divisor.