Question

State the center point (h, k), the lengths of the major and minor axis, the vertices, the focal points (foci), the eccentricity and graph.
3) 25x^2 + 16y^2 = 400
4) 4x^2 + 9y^2 – 16x + 90y + 97 = 0

Answer 1

Change it into - form and check whether a>or<b deciding which would tell whether the ellipse is hori. or vertical ellipse...
then vertex is (0,0) ... ecc. = sqrt(1- b^2/a^2) ... find focii...