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Mathematics 17 Online
OpenStudy (anonymous):

Is The graph below is the graph of a function. (SEE attachment)

OpenStudy (anonymous):

ganeshie8 (ganeshie8):

try vertical line test

OpenStudy (anonymous):

NO its not!

ganeshie8 (ganeshie8):

why not

OpenStudy (anonymous):

because in order for it to be a function wouldn't it have to start on the y axis?

OpenStudy (anonymous):

Of course it is... it slightly resembles a parabola. So maybe it could resemble y=(x+1)^2. And vertical line test is the way to proceed.

OpenStudy (anonymous):

no. a function is anything where one x value produces a single y value. this seems legit

OpenStudy (anonymous):

It is a function, that is definite!

ganeshie8 (ganeshie8):

starting on y axis is not needed. in order for it to be a function it has to pass vertical line test. thats all

OpenStudy (anonymous):

I meant no to @jslp3z

OpenStudy (anonymous):

ooooh

OpenStudy (anonymous):

thanks for clarifying that guys

ganeshie8 (ganeshie8):

you're welcome :)

OpenStudy (anonymous):

"no. a function is anything where one x value produces a single y value. this seems legit".. this curve does produce that. You've got it confused with y^2=4ax, where for 1 value of x, there are 2 values of y. But in this curve for each value of x, there is a only one value of y.

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