Alicia is writing the program for a video game. For one part of the game she uses the rule (x,y) → (x - 3,y + 4) to move points on the screen.
(a) What output does the rule give when input is (-3,5)? Show Work.
(b) What output does the rule give when in the input is (0,-4)? Show Work.
(c) Is the rule a function? Explain why it is or why it's not.