Which of the following expressions represents a function? {(1, 2), (4, –2), (8, 3), (9, –3)} y2 = 16 − x2 2x2 + y2 = 5 x = 7

asked Mar 9, 2017 154k views

3 votes

Which of the following expressions represents a function?

{(1, 2), (4, –2), (8, 3), (9, –3)}

y2 = 16 − x2

2x2 + y2 = 5

x = 7

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3 votes

The first one is a function because their is only 1 y-value for every x-value.

TPhe answered Mar 16, 2017

by TPhe

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