How do you evaluate the function $f (x) = 3 x - 7$ $f(x)=3x-7$ for x=4?

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Answer 1 · 2015-10-30T08:56:00

$5$ $5$

Substitute $4$ $4$ into the function everywhere that there is an $x$ $x$ .

You would get

$3 (4) - 7$ $3(4)-7$
$= 12 - 7$ $=12-7$
$= 5$ $=5$
$f (4) = 5$ $f(4)=5$

$f (4)$ $f(4)$ is the same thing as evaluating the function for $x = 4$ $x=4$ .

How do you evaluate the function f(x)=3x−7f(x)=3x-7 for x=4?