You should begin by graphing both of these triangles, then seeing the type of translation that happened.
-9y + 3 is the answer to your Simplify equation
According to my calculations,
1 + 0 = = 1 (single)
But if we add another one...
1 + 1 = 2 (love!)
that is because we added another one and they're married together happily ever after.