hendrikperez78 hendrikperez78
  • 29-04-2020
  • Mathematics
contestada

A parabola intersects the x-axis at x=3, equals, 3 and x=9.

Respuesta :

kallyhe
kallyhe kallyhe
  • 29-04-2020

Answer: x is 6

Step-by-step explanation:

where a and b are x intercepts given to us.

So rewriting in factored form:

y = ([tex]x-3[/tex])([tex]x-9[/tex])

so now you have to simplify it using the formula [tex]y=[/tex] [tex]ax^{2}[/tex][tex]+[/tex] [tex]bx-c[/tex]

y= [tex]x^{2}[/tex]- [tex]12x[/tex]+[tex]27[/tex]

so with this formula [tex]x=\frac{-b}{2a}[/tex] we can find the x coordinate

[tex]x=\frac{-(-12)}{2(1)}[/tex]

and the answer would be 6

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