A parabola can be represented by the equation y squared is equal to negative x What are the coordinates of the focus and the equation of the directrix?
Answer
A
focus: open paren 1 fourth comma 0 close paren ; directrix: x is equal to negative 1 fourth
B
focus: open paren 4 comma 0 close paren ; directrix: x is equal to negative 4
C
focus: open paren negative 4 comma 0 close paren ; directrix: x is equal to 4
D
focus: open paren negative 1 fourth comma 0 close paren ; directrix: x is equal to 1 fourth