Question

Is this function right?? Let f(x)=9x-7. Simplify the expression f(x+h) -f(x)/h

9(x+h)-7[9x-7]/h = 9
Is the answer 9??

Answer 1

What is the question? You asked like 3..

Answer 2

this is the question..Let f(x)=9x-7. Simplify the expression f(x+h) -f(x)/h

that was me showing work

Answer 3

f(x) = 9x - 7
f(x+h) = 9(x+h) - 7

We have to find: \(\frac{f(x+h) - f(x)}{h}\)
\[= \frac{9(x+h) - 7 - 9x + 7}{h} = \frac{9x + 9h - 7 - 9x + 7}{h} = \frac{9h}{h} = 9\]
9 is the first differential of f(x)

Answer 4

so it's 9 right @AkashdeepDeb

Answer 5

Yes.