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OpenStudy (anonymous):

is this a function. i dont think so but am not sure...

OpenStudy (anonymous):

OpenStudy (mathlegend):

Yes this is a function.

OpenStudy (mathlegend):

Because it passes the vertical line test @EmmaH

OpenStudy (anonymous):

what exactly is the vertical line test?

OpenStudy (mathlegend):

Also the reason you are not getting help here... is because this is Writing. You have to post in Mathematics. :)

OpenStudy (anonymous):

hahaha oops

OpenStudy (mathlegend):

You see the red line in the picture is a Vertical line... notice though it touches the parabola TWO times. That is not a function.

OpenStudy (anonymous):

oooh thanks a bunch:)

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