ellipse - urgent help needed Hi there.. i have an exam tomorrow morning and can't figure this out. ellipse defined by 3x^2 + 2y^2 = k length of major axis is 6 find k? ok.. i know that the major axis = 2a, so in this case a = 3 the general form of an ellipse is x^2/a^2 + y^2/b^2 = 1 ???? where do i go now ????