Question

q3
1 point
compute $f(a)$ algebraically for $a = -4.2$ if $f(x) = 7.2x + 3.4$
3.8
10.6
0.4
7.2
14

Explanation:

Step1: Recall derivative of linear function

For $f(x)=mx+b$, $f'(x)=m$

Step2: Identify slope from given function

Given $f(x)=7.2x+3.4$, $m=7.2$

Step3: Evaluate $f'(a)$ (constant derivative)

$f'(a)=7.2$ for any $a$, including $a=-4.2$

Answer:

7.2