Answer:hello :
let : y = f(x)
you have : y = x² + 5
calculate : x
x² = y - 5
x exsit for : y - 5 ≥ 0
if : x ≥ 0 x = √( y - 5) so the inverse functio for f is : g(x) = √( x - 5)
if : x ≤ 0 x = - √( y - 5) so the inverse functio for f is :h(x) = - √( x - 5)
Answer:

Step-by-step explanation:
Look at the picture.
The formula of a slope:

From the graph we have two points (0, -4) and (3, 0).
Substitute:

Well all you do is times 25,15, and 10