Question

You start at (6,8). you move left 5 units

Answer 1

To move a point a units to the left means that you subtract a units to the x-coordinate of the point, just as follow:

T(x,y) => (x-a,y)

Then, if the point (6,8) is moved 5 units to the left, you have:

T(6,8) => (6-5,8) = (1,8)

Hence, the new point is (1,8)