Functionsssssssssssss again

label Mathematics
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which of the following is y a function of x: 

A) x2 + 2y = -4  or B) X2 - y =2

Oct 3rd, 2015

Thank you for the opportunity to help you with your question!

 Function of "y a function of x" (denoted y = y( x) 

 y-varies according to whatever value x takes on. A causal relationship is often implied (i.e. "xcauses y"). or varies directly. In this particular question

we can find the value of y to determine if x causes y

x2+2y=-4

2y=-4-x2. this does not give the correct answer of y

 B -y=2-x2 

B is the correct answer


 

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 17th, 2015

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Oct 3rd, 2015
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