abbyb19
abbyb19 abbyb19
  • 30-12-2017
  • Mathematics
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Write an equation for this parabola. The vertex is ( 1, 3)

Write an equation for this parabola The vertex is 1 3 class=

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Hosein
Hosein Hosein
  • 30-12-2017

[tex]a(x - 4)(x + 2) = \\ a {x}^{2} - 2ax - 8a[/tex]
so put x=1 solve
[tex]a - 2a - 8a = 3 > > > - 9a = 3 \\ a = \frac{ - 1}{3} [/tex]
then
[tex] \frac{ - 1}{3} {x}^{2} + \frac{2}{3} + \frac{8}{3} [/tex]


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