Question

What is the range of the function f(x)=3.2x for the domain {-4,-2,0,2,4}

Answer 1

Answer:

Option A.  $\{-12.8,-6.4,0,6.4,12.8\}$

Step-by-step explanation:

we have

$f(x)=3.2x$

we know that

To find the range, substitute each value of x of the domain and find the value of f(x)

so

For $x=-4$ -----> $f(-4)=3.2(-4)=-12.8$

For $x=-2$ -----> $f(-2)=3.2(-2)=-6.4$

For $x=0$ -----> $f(0)=3.2(0)=0$

For $x=2$ -----> $f(2)=3.2(2)=6.4$

For $x=4$ -----> $f(4)=3.2(-4)=12.8$

therefore

The range is $\{-12.8,-6.4,0,6.4,12.8\}$