Answer:
C. [tex]\frac{13}{2}[/tex]
Step-by-step explanation:
The formula to calculate slope is m=[tex]\frac{y2-y1}{x2-x1}[/tex]
(-1, 9) is x1 and y1, (-3, -3) is x2 and y2 in this formula.
[tex]\frac{-4 - 9}{-3 - -1}[/tex] --- plug in values
[tex]\frac{-13}{-2}[/tex] --- simplify
[tex]\frac{-13}{-2}[/tex] = [tex]\frac{13}{2}[/tex]
