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Popular >

directrix x^2-2x

Solution

directrix

x^{2} - 2 x

Solution

y = - \frac{5}{4}

Solution steps

Rewrite

y = x^{2} - 2 x

in the standard form

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

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

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, - 1)

y-coordinate

y = - 1 - p

y = - 1 - \frac{1}{4}

Refine

y = - \frac{5}{4}

Popular Examples

directrix 20y=(x-12)^2-20 directrix

20 y = (x - 12)^{2} - 20

directrix-3x^2 directrix

- 3 x^{2}

directrix x^2-8x+24 directrix

x^{2} - 8 x + 24

directrix y=(x-1)^2+3 directrix

y = (x - 1)^{2} + 3

directrix+y=x^2+2x-3 directrix

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

Frequently Asked Questions (FAQ)

What is the directrix x^2-2x ?
The directrix x^2-2x is y=-5/4