Question

question 1 of 10
what is the slope formula?
a. $\frac{x_2 + x_1}{y_2 + y_1}$
b. $\frac{x_2 - x_1}{y_2 - y_1}$
c. $\frac{y_2 - y_1}{x_2 - x_1}$
d. $\frac{y_2 - x_1}{x_2 - y_1}$

Explanation:

Step1: Recall slope concept

Slope measures steepness of a line.

Step2: Know slope formula

For two points $(x_1,y_1)$ and $(x_2,y_2)$ on a line, slope $m=\frac{y_2 - y_1}{x_2 - x_1}$.

Answer:

C. $\frac{y_2 - y_1}{x_2 - x_1}$