f (1, -2) is equidistant with (4, 4) and (x, 4), find x.

Answer 1

This would have been a little tougher had the two points not lain on a horizontal line.

As it is, (1,-2) lies 3 units to the left of (4,4)

So, just pick the point (x,4) such that 1 is 3 units to the right of x.

x = -2

Answer 2

f (1, -2) is equidistant with (4, 4) and (x, 4), find x.

I need a complete solution for this equation.