# Chapter 2 - Section 2.3 - Lines - 2.3 Assess Your Understanding: 23

slope is undefined

#### Work Step by Step

RECALL: The slope $m$ of a line can be found using the formula $m=\dfrac{y_2−y_1}{x_2−x_1}$ where $(x_1, y_1)$ and $(x_2, y_2)$ are points on the line. (i) Using the two given points on the line, solving for m gives: $m=\dfrac{−2−2}{−1−(−1)}=\dfrac{−4}{0}$ (slope is undefined) (ii) Plot the points on the same coordinate plane, then connect them using a straight line to complete the graph. (refer to the attached image in the answer part above for the graph)

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