Question 35527
I believe what the teacher requires is to provide a general formula or rule that would translate a point in a cartesian coordinate system to a different point in the same system
For example let say we have an arbitary point in cartesian coordinate system represented as (x,y).

Suppose we require another point which is a translation of the point (x,y) by
m units up or down and n units left or right. The direction is obtained by assuming proper sign convention.

In the coordinate system we all know (0,0) is origin and right of (0, 0) is positive and left is negative similarly up is positive and down is negative.

The new point after translation is given by the formula (x + m, y + n).

So if we want to move 1 unit to the left and 3 units down
m = -1 and n = -3 

plugging m and n in the formula we get (x - 1, y - 3)