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9.3 (Day 2) Parabolas. Today’s Date: 2/3/11. Parabolas. Dx. A of S. 2c. c. 2c. c. F. A of S. c. V. F. V. c. Dx. Left / Right. Up / Down. Ex 1) Find the Vertex, Focus, Directrix , Axis of Symmetry, and Graph . A of S. F. A of S:. Opens Up Focus is 3/2 units up from V
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9.3 (Day 2) Parabolas Today’s Date: 2/3/11
Parabolas Dx A of S 2c c 2c c F A of S c V F V c Dx Left / Right Up / Down
Ex 1) Find the Vertex, Focus, Directrix, Axis of Symmetry, and Graph A of S F A of S: Opens Up Focus is 3/2 units up from V Directrix is 3/2 units down from V Go out right / left 3 from F V Dx
Ex 2) Find the V, F, Dx, A of S, and Graph Dx A of S V F A of S: Opens Left Focus is 3/4 units left from V Go up & down 3/2 from F Dx is 3/4 units right from V
Ex 3) Find the V, F, Dx, A of S, and Graph A of S V Dx F A of S: Opens Down Focus is 5/2 units down from V Go left & right 5 from F Dx is 5/2 units up from V
Summary **ALWAYS Sketch!! Vertex (h, k) Focus Directrix Opens y = __________ or x = _______
Homework #904 Pg. 416 17 – 26 all