Question

Using a directrix of y = 5 and a focus of (4, 1), what quadratic function is created?

Answer 1

f(x) = 1/4 (x − 4)2 − 3
f(x) = 1/8 (x + 4)2 − 3
f(x) = −1/8 (x − 4)2 + 3
f(x) = −1/4 (x + 4)2 − 3

Answer 2

I think it's A or C

Answer 3

@amity hey again :)

Answer 4

Yes i am reading your problem

Answer 5

Yes i am reading your problem

Answer 6

thanks

Answer 7

It is a parabola not a ellipse and hyperbola as single directrix

Answer 8

ok

Answer 9

so it's C?

Answer 10

It is a parabola not a ellipse and hyperbola as single directrix

Answer 11

um..I know that

Answer 12

I'm just confused. so it's A instead?

Answer 13

Answer is c

Answer 14

Answer is c

Answer 15

thank you xx

Answer 16

Take any point (x,y) and its distance from focus and directrix equate

Answer 17

Take any point (x,y) and its distance from focus and directrix equate

Answer 18

Welcome yyyy

Answer 19

Welcome yyyy