de

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Beliebt Geometry >

leitkurve y=4x^2+8x-20

Lösung

leitkurve

y = 4 x^{2} + 8 x - 20

Lösung

y = - \frac{385}{16}

Schritte zur Lösung

Rewrite

y = 4 x^{2} + 8 x - 20

in the standard form

4 \cdot \frac{1}{16} (y - (- 24)) = (x - (- 1))^{2}

(h, k) = (- 1, - 24), p = \frac{1}{16}

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

(- 1, - 24)

y-coordinate

y = - 24 - p

y = - 24 - \frac{1}{16}

Fasse zusammen

y = - \frac{385}{16}

Graph

Beliebte Beispiele

leitkurve 2x^2-4x+15

d i rec t r i x 2 x^{2} - 4 x + 15

leitkurve y=-1/8 x^2

d i rec t r i x y = - \frac{1}{8} x^{2}

leitkurve x^2=-20y

d i rec t r i x x^{2} = - 20 y

leitkurve y=3x^2-2x-6

d i rec t r i x y = 3 x^{2} - 2 x - 6

leitkurve t^2+2t-48

d i rec t r i x t^{2} + 2 t - 48