Answer: X = 3
Explanation: Your learning about Transformation: for parent function correct?
Well there are multiple parent functions and the one your learning in this problem is parents functions of translations.
Translations are shifts in the graph of the parent function, it can be horizontally, vertically, or both without changing its shape or orentation.
Vertical means up and down, and to find and know it's vertical besides looking at it. You would use the formal
f(x) + k (up) or f(x) - k (down)
When you look at the line it's plotted on the x-axis at 3 and it's not plotted on the y-axis so that means that it the pair looks like (3,0)
So if you put in the points for the formula f(x) + k... will look like 3 + 0 = 3
x = 3
