Question

PLEASE HELP, algebra 1

Answer 1

The last option is a function. x values can not be repeated, but y values can. For example, (1,2),(2,2) is fine.........(1,2),(1,3) is not, it produces a vertical line, therefore, would be undefined and not a function.

Answer 2

Option d because for it to be a function the value of x can not be repeated