Mathhelp346
PLEASE HELP PLEASE:
Write each quadratic function in vertex form. Give the coordinates of the vertex and the equation of the axis of symmetry. Then describe the transformations from f(x)= x^2 to g.
g(x)=-x^2+2
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mark_o.
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do you know how to graph these two equation?
Mathhelp346
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no
mark_o.
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try that
mark_o.
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can you see the vertex of each eq?
Mathhelp346
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..how do i enter them in?
Mathhelp346
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nevermind
Mathhelp346
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yes
mark_o.
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now that you know the vertex of each you can write the vertex form of each of the equation
mark_o.
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the vertex form formula is
a(x-h)+k=0, where vertex= (h,k)
Mathhelp346
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oh ok
Mathhelp346
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so h is x
and k is y
mark_o.
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from ax^2 +bx +c=0
f(x)=-x^2+2= x^2 where b=0, c=0
g(x)=-x^2+2, where b=0,c=2
Mathhelp346
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wait why is f(x)=-x^2+2= x^2? shouldn't it be just f(x)=x^2?
mark_o.
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these two eQ are different, see the graph
Mathhelp346
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why is the f(x) different?
mark_o.
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the main form is f(x)=x^2 but if you change them to y=-x^2 now theres a negative sign then if you add 2 then you have to jump up 2 on y axis
mark_o.
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did you see the difference between the two graph now?
Mathhelp346
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oh so your showing the transformation?