Aparabola has a vertex at the origin. the equation of the directrix of the parabola is y = 3.
what are the coordinates of its focus?
(0,3)
(3,0)
(0,–3)
(–3,0)
urgent. need quick.

The correct option is 3.

Step-by-step explanation:

The vertex of parabola is origin and directrix of the parabola is y = 3.

The standard form of a parabola is

Where (h,k) is vertex. (h,k+p) is focus and y=k-p is directix.

The vertex of parabola is origin. So,

Directrix of the parabola is y = 3.

The value of p is -3.

Focus of the parabola is (h,k+p).

Therefore focus of the parabola is (0,-3) and option 3 is correct.

hi there, the correct answer would be c! or (0,-3) hope this helps :)

Step-by-step explanation: i just took the test and got all of em correct

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.