What is the axis y=-(0.009(x-220)^2-220) ?

The axis y=-(0.009(x-220)^2-220) is x=220

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axis y=-(0.009(x-220)^2-220)

axis

y = - (0.009 (x - 220)^{2} - 220)

x = 220

Solution steps

y = - (0.009 (x - 220)^{2} - 220)

Rewrite

y = - (0.009 (x - 220)^{2} - 220)

in the standard form

4 (- 27.77777 \dots) (y - 220) = (x - 220)^{2}

Therefore parabola properties are:

(h, k) = (220, 220), p = - 27.77777 \dots

Parabola is of the form

4 p (y - k) = (x - h)^{2}

and is symmetric around the

y

-axis

Axis of symmetry is a line parallel to the

y

-axis which intersects the vertex:

x = 220

(x - 4)^{2} = 8 (y - 3)

y = - 2 x^{2} + 6 x + 10

y = - 3 (x + 6)^{2} + 4

y^{2} = - 6 x

y \leq 2 x^{2} - 10 x + 10

What is the axis y=-(0.009(x-220)^2-220) ?
The axis y=-(0.009(x-220)^2-220) is x=220