Question 979666
From the center to the vertex is length 2, and the whole axis is length 4.  This is the major axis, and the vertices of the ellipse will be (0,5) and (-4,5).  It will be longest along the x-axis.  The co-vertices have length 1 from the center and will be along the y-axis.  They are (-2,4) and (-2,6).  The semi-major axis is squared and put in the denominator for x in this instance and the semi-minor axis of 1 squared is just one.

The center is offset from the origin.
(x+2)^2/4 +(y-5)^2 =1