73) Vertices at (-4, 4) and (10, 4); focus at (8, 4) of of Solve the problem. 74) The orbit of a planet around a sun is an ellipse with the sun at one focus. The aphelion of a planet is its greatest distance from the sun, its perihelion is its shortest distance, and its mean distance is the length of the semimajor axis of the elliptical orbit. If a planet has a perihelion of 335.7 million miles and a mean distance of 338 million miles, write an equation for the orbit of the planet around the sun. Graph the hyperbola. 75) 25y2 - 4x2 + 100 ided I 10 * Find the asymptotes of the hyperbola. x2 2 76) 25 4 =1 Graph the hyperbola. 77) (x + 2)2 - 4(y - 1)2 = 4 -10 10 x ross