anonymous
  • anonymous
please help me find the quadratic equation for these points (-9,20) (-9,17) (-8,16) (-7,17) (-7,20)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Owlfred
  • Owlfred
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amistre64
  • amistre64
well, its gonna be a y^2 maybe
anonymous
  • anonymous
sorry to interrupt but..... amister64 can you help me please after you finish?

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amistre64
  • amistre64
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amistre64
  • amistre64
i can try....
anonymous
  • anonymous
ok thanks
amistre64
  • amistre64
i made this for this kinda problem; just gotta plug in the numbers in reverse tho for this one
anonymous
  • anonymous
what level of math are you in?
amistre64
  • amistre64
0.25y^2 -9.25y + 76 maybe
anonymous
  • anonymous
I think you need a system of linear equations to solve this problem
amistre64
  • amistre64
yeah, you do :)
amistre64
  • amistre64
3 of them
anonymous
  • anonymous
I think that you can find the reduced row echelon form of the system or use craemers rule
anonymous
  • anonymous
sorry if you do not understand reduced row echelon form... it is fancy matrix math I learned in a college linear algebra class
anonymous
  • anonymous
I think you just need to choose 3 sample points. If you use all 5 you will have an overdetermined system.
anonymous
  • anonymous
we have to figure it out by refering to the parent function which is y=x^2

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