Question

How do i find the directrix?

Answer 1

i know the vertex is (3,0) and the focus is (3,-4)

Answer 2

it's that horizontal dotted line...

Answer 3

i know what it is but idk the value

Answer 4

it's the same distance from the vertex to the focus, but in the opposite direction...

Answer 5

so 4?

Answer 6

you need the equation of a line...

Answer 7

x=4

Answer 8

that's a vertical line.

Answer 9

y=4 my bad

Answer 10

there you go...:)

Answer 11

thank you :)

Answer 12

yw...:)