SOLUTION: I need to find the foci, vertices, directrix, axis for 4(x-1)^2+y^2=1

Question 397055: I need to find the foci, vertices, directrix, axis for 4(x-1)^2+y^2=1
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
<==>
The conic section is an ellipse.
The center of the ellipse is (1,0).
The major axis x = 1, the minor axis y = 0.
Here, , and , and so , or
, or , or c = .
Therefore the foci are (1, ) and (1, ).
The vertices are (1, 1) and (1, -1). The co-vertices are (1/2, 0) and (3/2, 0).
The eccentricity is
==> The directrices are and
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