which equation represents a function

Algebra
Tutor: None Selected Time limit: 1 Day

x=4y+7

y^2=-5x-8

x^2+y^2=16

y=_+2x+3  the line is under the plus sign

Mar 19th, 2015

Option 4 is the correct one. Please best my answer :)

Mar 19th, 2015

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Mar 19th, 2015
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Mar 19th, 2015
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