Question

Which lists all the integer solutions of the equation |x| = 7?

a. –7 only
b. –7 and 7
c. 0 and 7
d. 7 only

Answer 1

The answer is b

Explanation:

Answer 2

`|a|=a\ if\ a\ \ \textgreater \ 0\\|0|=0\\|a|=-a|\ if\ a \ \textless \ 0\\-------------------------\\|x|=7\ if\ \huge\boxed{x=7\ or\ -7}\to\your\ answer\ \boxed{b.}`