Question

Find each function, find f(a+h) and f(a+h)-f(a)

a) f(x)=5x-2

Answer 1

5(a+h) -2 = 5a + 5h - 2
5(a) -2 = 5 a - 2
--------------------------subtract
5 h is the answer

now if we were doing calculus we would divide that by h and then let h go to 0
5 h/h = 5
and we call that the "derivative" of f(x)=5x-2

Answer 2

May I know where you got 5a + 5h - 2

Answer 3

f(a+h) = 5(a+h) - 2
from your function definition

5(a+h) -2 = 5 a + 5 h - 2

Answer 4

Thank you~