(Score for Question 2: of 7 points)
2. Alicia is writing the program for a video game. For one part of the game she uses the rule
(x, y) → (x + 1, y - 3) to move points on the screen.
(a) What output does the rule give when the input is (-6,0) (1 point)? Show your work (2 points)
(b) What output does the rule give when the input is (3.-4) (1 point)? Show your work (2 points).
(c) Is the rule a function? Explain why it is or why it is not (1 point)

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