What is the vertices y=x^2-6x+8 ?

The vertices y=x^2-6x+8 is Minimum (3,-1)

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vertices y=x^2-6x+8

vertices

y = x^{2} - 6 x + 8

Minimum (3, - 1)

Solution steps

y = x^{2} - 6 x + 8

The parabola parameters are:

a = 1, b = - 6, c = 8

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

x_{v} = - \frac{( - 6 )}{2 \cdot 1}

Simplify

x_{v} = 3

Plug in

x_{v} = 3

to find the

y_{v}

value

y_{v} = - 1

Therefore the parabola vertex is

(3, - 1)

a < 0,

then the vertex is a maximum value

a > 0,

then the vertex is a minimum value

a = 1

Minimum (3, - 1)

y = (x - 1)^{2} - 2

y = - 4 x^{2} - 12 x - 8

y = + x^{2} + 8 x + 9

25 x^{2} - 36

y = 4 x^{2} - 40 x + 98