What is the vertices y=x^2-2x-8 ?

The vertices y=x^2-2x-8 is Minimum (1,-9)

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vertices y=x^2-2x-8

vertices

y = x^{2} - 2 x - 8

Minimum (1, - 9)

Solution steps

y = x^{2} - 2 x - 8

The parabola parameters are:

a = 1, b = - 2, c = - 8

x_{v} = - \frac{b}{2 a}

x_{v} = - \frac{( - 2 )}{2 \cdot 1}

Simplify

x_{v} = 1

Plug in

x_{v} = 1

to find the

y_{v}

value

y_{v} = - 9

Therefore the parabola vertex is

(1, - 9)

a < 0,

then the vertex is a maximum value

a > 0,

then the vertex is a minimum value

a = 1

Minimum (1, - 9)

y = x^{2} - 4 x + 3

y = 2 x^{2}

x^{2} + 2 x - 1 - (2 x^{2} - 3 x + 6)

3 x^{2} - x - 2

f (x) = 4 x^{2} + 2