Question

Determine which relation is a function.

Answer 1

where is the question

Answer 2

rebember no x value can have more than one y value

Answer 3

it's in the pictures

Answer 4

it is the last one look at the points

Answer 5

i still don't understand how to solve it with pictures :/

Answer 6

run the "vertical line test" on them -> http://www.mathwords.com/v/vertical_line_test.htm

Answer 7

ok pick a graph and write down the points and tell me what you have