SAT Subject Test Mathematics Level 2

When an ellipse is centered at the origin and has major and minor axes along the x- and y-axes, the
equation of the ellipse is

where the axial intersections are (±a,0) and (0,±b). In Example 6, a = 2 and b = 3, so the equation is

ELLIPSE

The equation    of  an  ellipse centered    at  the origin  and with    axial   intersections   at  (± a,0) and

(0,± b) is:

The answer is (D).

Note that if you don’t remember the formula, you can still find the answer. It just takes a little

(B)

(C)

(D)

(E)