## Elementary Geometry for College Students (7th Edition)

(3,-2) and(3,7) Using the slope formula x1=3,y1=-2, x2=3,y2=7 m=$\frac{y2-y1}{x2-x1}$ m = $\frac{7-(-2)}{3-3}$ = $\frac{9}{0}$ = Undefined