Question

1.

Which relation is a function?


{(0, –9), (–9, –2), (0, –3)}

{(0, –9), (–9, 0), (–3, –3)}

{0, –9, –2, –3}

{(0, –9), (–2, –3), (–2, 0), (–3, –2)}

Answer 1

B

Explanation:

Answer 2

B

Explanation:

Soemthing is a function if it can pass the vertical line test

the vertical line test is when you draw a vertical line and it only touches the graph once

Another way of thinking about this is no function can have two of the same values on the x axis

I'm not too sure what's happening with the third response but the answer is B