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Mathematics 15 Online
OpenStudy (ammarah):

Graph the polynomial function. f(x) =-x^3 -2 @mathstudent55

OpenStudy (ammarah):

@mathstudent55 @Easyaspi314

OpenStudy (anonymous):

|dw:1383019080828:dw|

OpenStudy (anonymous):

when x = 0, y = -2...so it has a y-intercept at y = -2

OpenStudy (ammarah):

wait but how do u get the other points>?

OpenStudy (anonymous):

well... the graph of y = x^3 is a classical function whose graph is:

OpenStudy (anonymous):

|dw:1383019292578:dw|

OpenStudy (anonymous):

so y = - x^3 is the reflection of x^3 over the x-axis...so -x^3 looks like:

OpenStudy (anonymous):

|dw:1383019355703:dw|

OpenStudy (anonymous):

so the graph of y = - x^3 - 2 is the graph of y = - x^3 just lowered 2 units!

OpenStudy (ammarah):

how about this equation" g(x) =x^4 +2x

OpenStudy (anonymous):

You're welcome.

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