Question

Which relation is a function?

Answer 1

Answer:

• The second graph, top right

Step-by-step explanation:

#1, top left

• Has repeating x- values at x = -2, not a function

#2, top right

• No repeat, input or outputs, is a function

#3, bottom left

• Has repeating x- values at x = 0, not a function

#4, bottom right

• Has repeating x- values at x = -1, not a function