Given the directrix of y = −1 and focus of (0, 3), which is the equation of the parabola? y = one eighthx2 − 1 y = −one eighthx2 + 1 y = one eighthx2 + 1 y = −one eighthx2 − 1

Step-by-step explanation:

we know that

The standard form of a quadratic equation is

where

(h,k) is the vertex

(h, k+p) is the focus

y=k-p is the directrix

we have

focus (0,3)

so

> equation A

directrix y=-1

so

---> equation B

Adds equation A and equation B

Find the value of p

substitute the values in the equation

therefore

y = one eighthx2 + 1

oof

step-by-step explanation:

a rotation about point l

step-by-step explanation:

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