Question

What transformation is represented by the rule (x, y)→(x, y+3) ?

A. translation 3 units down

B. translation 3 units left

C. translation 3 units right

D. translation 3 units up

Answer 1

Notice that x remains x, so the translation is not right or left.
y becomes y + 3. You add 3 to each y-coordinate, so the translation is 3 units up.