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Mathematics 13 Online
OpenStudy (anonymous):

What is the quadratic function that is created with roots -10 and -6 and a vertex at (-8, -8)?

OpenStudy (anonymous):

there is really too much information here your math teacher has overoaded the question one root and a vertex would do it

OpenStudy (anonymous):

what happened to your hat?

OpenStudy (anonymous):

one way is to start with \[y=a(x+10)(x+6)\] and then solve for \(a\)

OpenStudy (anonymous):

since the point \((-8,-8)\) is on the graph you know if \(x=-8\) then \(y=-8\) and you can solve \[-8=a(-8+6)(-8+10)\] or \[-8=4a\]

OpenStudy (anonymous):

oops that was wrong, should be \[-8=8a\]

OpenStudy (anonymous):

omg thanks so much

OpenStudy (anonymous):

what is this, picture day?

OpenStudy (anonymous):

it could be

OpenStudy (anonymous):

btw you did get \[y=-(x+10)(x+6)\] or \[y=-x^2-16 x-60\] right?

OpenStudy (anonymous):

ya

OpenStudy (triciaal):

@satellite73 are you sure?

OpenStudy (triciaal):

vertex at (-8, -8) so f(-8) =should be -8

OpenStudy (anonymous):

that makes sense

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