Question

f(x)= 3x+1, then f(a+h)- f(a)

Answer 1

Hint:
f(x) = 3x + 1
f(a) = 3a + 1
f(a + h) = 3(a + h) + 1

Answer 2

so you would distribute 3(a+h)

Answer 3

First see if you can figure out what f(a + h) - f(a) is

Answer 4

hmm im not sure how to solve that either

Answer 5

f(a + h) - f(a) = 3(a +h) + 1 - (3a + 1)

Answer 6

Simplify that