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S0fw0N
 2 years ago
Best ResponseYou've already chosen the best response.0if every (x) has 1 (y) then (y) is a function of (x)

S0fw0N
 2 years ago
Best ResponseYou've already chosen the best response.0now if every (x) has 2 (y) s then (y) is not a function of (x) (x) is a function of (y)

seidi.yamauti
 2 years ago
Best ResponseYou've already chosen the best response.0S0fw0N is waiting for you to give the real answer. So he/she just explained how it works!

seidi.yamauti
 2 years ago
Best ResponseYou've already chosen the best response.0You need to see if the formula is injective.

seidi.yamauti
 2 years ago
Best ResponseYou've already chosen the best response.0(if you plot the function, there must be just one y for each x, but there can be two or more x for an y value)

dpaInc
 2 years ago
Best ResponseYou've already chosen the best response.1in plain english, for any ONE x value, will you have only ONE y value?

jefftheloveableguy
 2 years ago
Best ResponseYou've already chosen the best response.0Yes for example if at (2,4). The point (2,7) would not make it a function because it does not pass the vertical line test.
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