## Algebra 1: Common Core (15th Edition)

Find two points that lie on the line: (-5,0.124) (-5, -0.584) Use the slope equation: $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ You will get: $\frac{-0.584-0.124}{-5-(-5)}$ The denominator simplifies to 0, so the slope is undefined.