Question

A line passes through the points (9, 30) and (18, 30). Which statement is true about the line?

Answer 1

(9,30)(18,30)....when u have 2 sets of points and there y value is the same, then u have a horizontal line with a slope of 0

answer : A...it has a slope of 0 because the change in the y values

Answer 2

Answer:

Option A It has a slope of zero because the change in the y-values is $0$

Step-by-step explanation:

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

$A(9,30)\ B(18,30)$

Substitute the values

$m=\frac{30-30}{18-9}$

$m=\frac{0}{9}=0$  ------> is a horizontal line

The slope is equal to zero, because the change in the y-values is $0$