Answer:
4) -18
8) I am not sure what you want answered for this question. Do you want slope?
Step-by-step explanation:
4) You have the equation: 2x+5
Plug in the first value of x = -9 to get f(-9) or the y/f(x)
2(-9)+5 = -13 = f(-9)
Plug in the second value of x =0 to get f(0) or the y/f(x) of that number
2(0) +5 = 5 = f(0)
Plug into f(-9)-f(0)
-13-5 = -18
