Question

Parabolas and equations

Answer 1

@rvc

Answer 2

@ganeshie8

Answer 3

First of all notice that the parabola with a directrix equation x = -1/3 opens to the right :

Answer 4

It's not the x line that is moving up and down, but rather y moving?

Answer 5

the general form of equation of parabola that opens to right is
\[\large x = \frac{1}{4c}y^2\]

where \(c = \) distance between directrix and vertex

Answer 6

so the equation would be
\[\large x = \frac{1}{4*\frac{1}{3}}y^2\]

simplify

Answer 7

0.75y^2

Answer 8

or 3/4y^2

Answer 9

x = 3/4 y^2

Answer 10

it is an equation, so you need to write the left hand side also ok

Answer 11

the equation of parabola in question is
\[x = \frac{3}{4}y^2\]

Answer 12

Yep :) thank you so much!! I had been accidentally writing it like so that's why it was all wack

Answer 13

i see..

remember x = k is a "vertical line"

Answer 14

I shall from now on ^-^ hah