Question

Is the following relation a function?

x y
1 -2
1 -3
2 1
3 -2

Answer 1

No, if you plot these points, you would be able to draw a vertical line through the first two points.

I other words, you can't have two y values for the same x value.

Answer 2

no because you have 1 twice in the first column

Answer 3

when you say 2 y values you mean having those -2s in the y column ?

Answer 4

thanks guys I greatly apprciate it

Answer 5

No, we mean for x =1 you will see that y = -2 and y=-3. This means the relation is not a function.

Answer 6

okay I got it now @marshallinwashington

Answer 7

Ok