1. Conics Test Last chance to SHINE!!

2. Unit 12 Conics Test Conic Graphing: 39 pts Completing the Square: 7 pts Writing Equations: 14 pts Conic Applications: 40 pts

3. Study Hints Know equations cold Know what determines orientation DO NOT get Vertex or CP wrong!!! Know what 1/4a does. What |1/a| does. Know what a, b, and c do for an ellipse & hyperbola Know how to calculate eccentricty Know how to complete the square Know satellite dish applications Know Quad Regression applications Know perihelion & aphelion

11. A satellite dish is shaped like a parabolic. The signals that emanate from a satellite strike the surface of the dish and are reflected to a single point, where the receiver is located (the focus). If the dish is 10 feet across at its opening and is 4 feet deep at its center, at what position should the receiver be placed?

12. Satellite Continued 10’ 4’ Since opening is 10’, then either side is 5’ (-5, 4) and (5, 4) y = a(x – h) 2 + k; but (h, k) = (0, 0) y = ax 2 (5, 4) is an ordered pair on the parabola 4 = a 5 2 4 = 25a a = 4/25

13. The cables of a suspension bridge are in the shape of a parabola. The towers supporting the cable are 600 feet apart and 80 feet high. If the cables touch the road surface midway between the towers, what is the height of the cable at a point 150 feet from a tower?