Find f(a), f(a + h), and the difference quotient f(a + h) − f(a)/ h , where h ≠ 0. f(x) = 4x + 9

## Answer

And we have given fr4 = 4x+ 9 – but x-a od 419) = 49 +90 but n=ath o flath) = 4(9th) +9 =40+cht 9 a f(a+h) = 49 +4h+9 + flath)-f(a) 49+thtg -( 49 +9). 2 ។ ។ – 49-49+ 4h +909 ។ ☆ – 4 Hence, fla) = 4at9 Hath) = 4a+th + 9 and flath)-f(a) h