Question

For f(x)=3x-4 find and simplify: (A) f(x+h)-f(x)/h and (B) f(x) -f(a)/x-a I understand how to do part (A) with the function f and got 3 for my answer. I'm just lost about how to do (B)

Answer 1

(3(a)-4)-(3(x)-4)/(a-x)
3a-4-3x+4/(a-x)
3a-3x/(a-x)
3 is your final answer

Answer 2

thanks!