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Algebra 7 Online
OpenStudy (anonymous):

Use the vertical-line test to determine which graph represents a function.

OpenStudy (anonymous):

OpenStudy (mitu12):

the first one

OpenStudy (anonymous):

Can you explain please?

OpenStudy (mitu12):

if you use the pencil method (vertical line test) than it touches all of the points at once

OpenStudy (anonymous):

Ok I see. Thank you!

OpenStudy (mitu12):

no problem

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