Math ordered pairs help?

Assumming that all couples in these series are of the form (x, y), choose the game which represents a function that is NOT one-to-one. A. ((-5.2) (0.3) (1.2)) b. ((8.1) (4.2) (11.3)) v. ((2.3) (4.2) (6.3) (4.4)) d. ((7.4) (13.2) (-1.1))

B and D represent functions that are * * 1 to 1. (No repeated values for X, and no repeated values for y). C is not a function 4 maps because both 2 and 4. The answer is A, because it is a function but not a function of 1 to 1. (Different values of x map to the same value of y). Answer: a. ((-5.2) (0.3) (1.2))

Math Made Easy: Finding Points on a Grid Using Ordered Pairs (Coordinates)