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Beliebt Geometry >

leitkurve y=2x(x-9)-(x-9)

Lösung

leitkurve

y = 2 x (x - 9) - (x - 9)

Lösung

y = - \frac{145}{4}

Schritte zur Lösung

Rewrite

y = 2 x (x - 9) - (x - 9)

in the standard form

4 \cdot \frac{1}{8} (y - (- \frac{289}{8})) = (x - \frac{19}{4})^{2}

(h, k) = (\frac{19}{4}, - \frac{289}{8}), p = \frac{1}{8}

Parabola is symmetric around the y-axis and so the directrix is a line parallel to the x-axis, a distance

- p

from the center

(\frac{19}{4}, - \frac{289}{8})

y-coordinate

y = - \frac{289}{8} - p

y = - \frac{289}{8} - \frac{1}{8}

Fasse zusammen

y = - \frac{145}{4}

Graph

Beliebte Beispiele

leitkurve y=2x^2-10x+12

d i rec t r i x y = 2 x^{2} - 10 x + 12

leitkurve-x^2+14x-45

d i rec t r i x - x^{2} + 14 x - 45

leitkurve y=x^2+5x+6

d i rec t r i x y = x^{2} + 5 x + 6

leitkurve y^2=6x

d i rec t r i x y^{2} = 6 x

leitkurve-4x^2+2x+2

d i rec t r i x - 4 x^{2} + 2 x + 2