If the focus of a parabola is (-2,1) and...

If the focus of a parabola is (-2,1) and the directrix has the equation `x+y=3` then its vertex is a. (0,3) b. (-1,1/2) c. (-1,2) d. (2,-1)

A

(0,3)

B

`(-1,(1)/(3))`

C

`(-1,2)`

D

`(2,-1)`

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The correct Answer is:

C

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