Question 676182: Determine whether the relation is a function.
{(-2, -7), (3, -5), (6, -4), (9, -6), (10, -1)}
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
Examine the set of x-coordinates. If they are all different, then the relation is a function. If any of them are the same, compare the y-coordinates of the particular ordered pairs where the x-coordinates are equal. If the y-coordinates in those ordered pairs are also equal, then you still have a function, but if you have any ordered pairs where the x-coordinates are equal but the y-coordinates are different, then you do NOT have a function.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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