Question

Is each relation a function? Explain. a. {(- 2, 3), ( 2, 2), ( 2, - 2)}

Answer 1

No, you cannot have two or more x coordinates the same.

Answer 2

thanks.

Answer 3

An x coordinate cannot have two y-values. SO in this case 2 would be at 2 and -2. Does not pass the horizontal line test.