Determine if the given relation is also a function.
{(-2,9),(0,3),(-2,6),(-9,-7)}

Question

Determine if the given relation is also a function.
{(-2,9),(0,3),(-2,6),(-9,-7)}

anonymous · Answer

do you know about the vertical line test?

anonymous · Answer

nope

anonymous · Answer

what's the definition of a function you're working with?

anonymous · Answer

Im not sure I missed class the day this lesson we covered functions so I have no clue what the definition of a function is. I do know that if you draw a vertical line & it touces a line more than one it is not a function....i think

anonymous · Answer

ok, in order for a relation to be a function, no first element (the x-coordinates) can be paired up with two different second elements (y-coordinate).  
I know, it sounds confusing even to me.

anonymous · Answer

but to put it in simpler terms, the x coordinates can only have 1 y coordinate.

anonymous · Answer

okay so {(9,1),(7,1)} is a function?

anonymous · Answer

im sorry im still somewhat confused

anonymous · Answer

if you look at x=-2 what is it paired up with?

anonymous · Answer

9

anonymous · Answer

and ?

anonymous · Answer

6

anonymous · Answer

so is this relation a function?

anonymous · Answer

no?

anonymous · Answer

correct... that x=-2 is paired up with two different ys.

anonymous · Answer

ohhh wow okay how helpful you were! Thank you so much!!

anonymous · Answer

yw

anonymous · Answer

i sure did complicate that! lol thank you!