Find the slope of the line that passes through the given points, if possible. (8, 4), (- 9, 4)
A) 0
B) - 1
C) 1
D) 2
E) undefined

Question

Quizplus · Accepted Answer

The slope of a line passing through two points $(x_1, y_1)$ and $(x_2, y_2)$ is given by $\frac{y_2-y_1}{x_2-x_1}$. In this case, the two points have the same $y$-coordinate, which means that the numerator is zero. Furthermore, the two points are not directly above and below each other, which means that the denominator is not zero. Therefore, the slope is $\frac{0}{	ext{nonzero}}=0$.

Find the Slope of the Line That Passes Through the Given