'Foci 2' presentation slideshows

374 views • 14 slides

Warm Up

1) 9x 2 + 4y 2 + 36x - 8y + 4 = 0. Warm Up. 2) y 2 - 4x 2 - 8x - 18y + 13 = 0. Rewrite each equation in information form. Then, graph and find the coordinates of all focal points. 3) Write an equation of the parabola described. a) Directrix: y = -2 and vertex (1, 3)

250 views • 13 slides

Today in Precalculus

Today in Precalculus. Go over homework Notes: Ellipses Completing the square Applications Homework. Ellipses. Prove that the graph of x 2 + 4y 2 + 2x + 8y + 1 = 0 is an ellipse. Find the center, vertices and foci. Then graph the ellipse by hand.

86 views • 8 slides