Chapter 9.3, Problem 15IP

To determine

To calculate: Slope of the line.

Answer to Problem 15IP

Slope of the line is $0$ .

Explanation of Solution

Given information:

The following graph:

Formula used:

Slope is given by the formula,

  $m=\frac{y_2-y_1}{x_2-x}$

where $x_2\ne x$ .

Calculation:

Slope is calculated as follows:

  $\begin{array}{l}m=\frac{y_2-y_1}{x_2-x}[\text{Definition of slope]}\\ m=\frac{2-2}{3-(-1)}[(x_1,y_1)=(-1,2),(x_2,y_2)=(3,2)]\\ m=\frac{0}{4}[\text{Simplify]}\\ m=0[\text{Divide]}\end{array}$