2. Consider all ellipses centered at the origin with minor axis of length 2 along the x axis. (a) What are the possible lengths of the major axis? (b) What can you say about the locations of the foci? (c) In a complete sentence, tell what happens to the shape of the ellipse when the foci approach each other. (d) Find an equation for the ellipse centered at the origin with minor axis of length 2 along the x axis, and passing through the point (1/2, 6)