For the function ƒ(x) = 4x − 3, evaluate and simplify the expression: https://hcdoe7234-chs-ccl.gradpoint.com/Resource/5905177,8BD,0,0,0,0,0/Assets/testitemimages/precalculus_a/relations_and_functions/pcalfunc_011.gif

Question

anonymous · Answer

Someone Help Please!

anonymous · Answer

I got 4. Give me a moment to show you how I got it

anonymous · Answer

[f(x+h)-f(x)] / h = [4x+4h-3-(4x-3) / h

Do you get it so far?

anonymous · Answer

I changed the "a" in the formula to "x"

anonymous · Answer

Just try simplifying the term on the right. That gives you your answer

anonymous · Answer

So the 4x and -4x cancel out giving you...

f(x+h)-f(x) / 4 = 4h-3+3/h

anonymous · Answer

next the -3 and +3 will cancel out to give you...

(x+h)-f(x) / 4 = 4h/h

The then h's cancel out to get you 4

anonymous · Answer

Taadaaa!