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OpenStudy (anonymous):
is this a function. i dont think so but am not sure...
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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. :)
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OpenStudy (anonymous):
hahaha oops
OpenStudy (mathlegend):
http://www.mathwarehouse.com/geometry/parabola/images/x=y2_vertical_line_test.gif
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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