Here is my explanation: (please leave questions if you need more help)
The function is defined as

This means that, taken an input m, the output is the input squared, plus 7.
So, if we take the input -4, we square it to get 16, and we add 7 to get 23.
500. I remember by the saying 5 or more let it soar 4 or less let it rest, meaning 5 or more round up, 4 or less leave it.
Answer:
slope = - 2
Step-by-step explanation:
calculate the slope m using the slope formula
m = 
with (x₁, y₁ ) = (- 1, 8 ) and (x₂, y₂ ) = (5, - 4 )
m =
=
=
= - 2
You cannot factor out a coefficient in this expression, because 9 and 8 do not have a common factor besides 1.