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Mathematics 16 Online
OpenStudy (anonymous):

Find the y-intercept for the graph of the quadratic function. y + 4 = (x + 2)^2

OpenStudy (eyust707):

The y intercept is the point where the graph passes through the y axis

OpenStudy (eyust707):

|dw:1342815121135:dw|

OpenStudy (eyust707):

At that point I just drew above, what is the x value?

OpenStudy (anonymous):

so it is (0,4)

OpenStudy (eyust707):

no...

OpenStudy (anonymous):

Set x to zero and solve for y. By inspection y = 0

OpenStudy (anonymous):

(4,0)

OpenStudy (eyust707):

What robtobey said is correct

OpenStudy (eyust707):

but why???

OpenStudy (eyust707):

Take a look at this graph

OpenStudy (eyust707):

I drew this without knowing what the graph looks like |dw:1342815255840:dw|

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