Question

Which relation does not represent a function?
Answer
(-5, 3), (-3, 1), (0, -4), (3, -6)
(2, 0), (4, 6), (6, 8), (10, 6)
(-3, 6), (-1, 1), (0, 1), (3, 7)
(-4, 2), (1, 5), (-2, 0), (1, 6)

Answer 1

So those numbers are given in terms of x and y:

(x,y)

Answer 2

x is the number you input

Answer 3

y is the number that is outputted

Answer 4

x must have 1 corresponding y value.

Answer 5

If you have a function and one time you input some value of x and you get a result. Then you come back later and input the same x value you better get the same result as before. If you don't, its not a function.

Answer 6

Do you see any choice where the same x value returned different y values?