A carpenter designs a tabletop in the shape of an ellipse 7 feet long and 4 feet wide. The carpenter sketches a drawing of the tabletop on a coordinate plane. The center of the tabletop is at the origin, the length falls along the x-
axis, and the width falls along the y-axis. Which equation represents the tabletop?
+
49
= 1
16
N
x2
+
= 1
16
12.25 -2
+
= 1
12.25