Solve the problem.A circle has a diameter with endpoints (-2, 1) and (18, 13). Find the coordinates of the center.

Find an equation for the parabola described.Vertex at (9, -2); focus at (9, -8)

Graph the circle with radius r and center (h, k).r = 4; (h, k) = (-2, -4)

Match the equation to the graph.(y + 1)2 = 5(x + 1)

Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 100 feet. The height of the arch 27 feet from the center is to be 12 feet. Find the height of the arch at its center.

Solve the problem.The roof of a building is in the shape of the hyperbola where x and y are in meters. Refer to the figure and determine the height h of the outside walls.A = 9 m

Find the center, transverse axis, vertices, foci, and asymptotes of the hyperbola.(x + 1)2 – 9(y + 3)2 = 9

Match the equation to the graph.(x + 2)2 = -5(y + 2)

Solve the problem.A circle has a diameter with endpoints (-2, 1) and (10, 13). Find the coordinates of the center.

Find the center (h, k) and radius r of the circle with the given equation. 2(x + 3)2 + 2(y + 1)2 = 20