Question

The point M(-6, -4) is translated 2 units right. What are the coordinates of the resulting point, M′?

Answer 1

the y coordinate stays the same 
just add 2 to the x coordinates gives

M(-4,-4)

Answer 2

Add 2 to the value of the x coordinate since it is horizontal and goes in either direction, left and right.
The coordinates of M' is (-4,-4).