Question

Which of the following functions has its only zero at x=-4

f(x)= |x|+4
f(x)= |x|-4
f(x)= |x+4|
f(x)= |x-4|

Answer 1

f(x)=|x|-4

Explanation:

Plug the equations into a TI-84 calculator

go to 2nd graph

look at the table and find -4 on the x side.

The correct equation will show 0

Answer 2

jj

Explanation: