Answer:
4
Step-by-step explanation:
Slope formula is:
[tex]\frac{y_{2-y_{1} } }{x_{2-x_{1} } }[/tex]
Plug the numbers in, let's say (-1,-7) is our "1" and (3,9) is our "2"
[tex]\frac{9-(-7)}{3-(-1)}[/tex]
[tex]\frac{16}{4}[/tex]
Simplifies to 4 , so the slope is 4
Hope this helps!