The points are (1, -11) and (17, -11).
Step-by-step explanation:
The distance between points (x1, y1) and (x2, y2) is
We have values for x1, y1, and y2. We leave x for x2, and we solve for x.
Square both sides.
or
x = 1 or x = 17
The points are (1, -11) and (17, -11).