greenplants
greenplants greenplants
  • 02-09-2016
  • Mathematics
contestada

Which of the following expressions represents a function?

{(1, 2), (4, –2), (8, 3), (9, –3)}

y2 = 16 − x2

2x2 + y2 = 5

x = 7

Respuesta :

Krose1
Krose1 Krose1
  • 03-09-2016
The first one is a function because their is only 1 y-value for every x-value.
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