Vivian L. answered • 01/24/14

Tutor

3
(1)
Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACH

Hi Lindsey;

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

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

m=(y-y

_{1})/(x-x_{1})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.