Question

A parabola has a focus at (−3, 7) and a directrix of y = −1. Where is its vertex?

Answer 1

halfway between the 2

Answer 2

halfway between what two?

Answer 3

well, between the focus and the directrix of course

Answer 4

so it would be (3,4)?

Answer 5

so we have the same x value, but the y value is midpoint between 7 and -1

Answer 6

Where does the directrix go in the picture, that is what confuses me

Answer 7

Thanks, that makes so much more sense

Answer 8

youre welcome, swiss picture was refering to finding the vertex if you had known the roots .... which is not what was presented in the problem