Alivia 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 the input is (-6,0)? Show your work

(B) what output does the rule give when input is (3,-4)? Show your work

(C) is the rule a function? Explain why or why not??