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Cerrena [4.2K]
3 years ago
6

Explain how you could determine the vertex of the given quadratic function graphically. f(x) = (x + 2) (x -4)

Mathematics
1 answer:
bearhunter [10]3 years ago
4 0

Answer:Get the equation in the form y = ax2 + bx + c.

Calculate -b / 2a. This is the x-coordinate of the vertex.

To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y.

Step-by-step explanation:

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let's notice the vertex, or U-turn, is at (-2, 2)

\bf ~~~~~~\textit{parabola vertex form} \\\\ \begin{array}{llll} \boxed{y=a(x- h)^2+ k}\\\\ x=a(y- k)^2+ h \end{array} \qquad\qquad vertex~~(\stackrel{-2}{ h},\stackrel{2}{ k}) \\\\\\ y=+1[x-(-2)]^2+2\implies y=(x+2)^2+2

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Brilliant_brown [7]

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Paul opened a bakery. The net value of the bakery (in
Umnica [9.8K]

Answer:

1) 2(t - 7)(t + 1)

2) $32,000

Step-by-step explanation:

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7 0
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Read 2 more answers
Use the graph that shows the solution to f(x)=g(x).
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Answer:

-2

Step-by-step explanation:

if showing in graph would be minus 2

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