Question

The graph of y=lx-5l is symmetric with respect to a vertical line. What is the equation of that line?

Answer 1

`color(green)(x=5)`

Explanation:

If `(x-5)!=0` then `abs(x-5)` allows for two different values of `x`
(for example, if `(x-5)=1` then `abs(x-5) rarr x=6 or x=4`)

If `(x-5)=0` there is only one solution for `x`, namely `x=5`