A parabola with vertex (h, k) and a vertical axis of symmetry is modeled by the equation y - k = a(x - h)2. Determine the vertex for a parabola modeled by y = (x ? 5)2 + 8 A) (5, 8) B) (?5, 8) C) (5, ?8) D) (?5, ?8)

Respuesta :

Answer:

B. [tex](?5,8)[/tex]

Step-by-step explanation:

We have been given a parabola with vertex (h, k) and a vertical axis of symmetry is modeled by the equation [tex]y-k = a(x-h)^2[/tex].

We are also given a parabola [tex]y=(x?5)^2+8[/tex].

Let us convert our given parabola equation in axis of symmetry equation as shown below:

[tex]y=(x?5)^2+8[/tex]

[tex]y-8=(x?5)^2+8-8[/tex]

[tex]y-8=1(x?5)^2[/tex]

Upon comparing our equation with equation [tex]y-k = a(x-h)^2[/tex], we can see that [tex]h=?5[/tex] and [tex]k=8[/tex].

Therefore, the vertex of the parabola is [tex](?5,8)[/tex] and option B is the correct choice.

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