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Unformatted text preview: y . We need to solve for p , which we know should be negative. Remember, the distance between the focus and the directrix is 2 p . MA 154 Lesson 26 Delworth Section 11.1 Parabolas 2 Ex 5) Vertex V(–3, 2) Ex 6) Vertex V(–1, –3) Directrix x = 3 Focus F(–1, 2) Ex 6) Vertex at the origin Ex 7) Vertex (3, –2) Symmetric to the yaxis Axis parallel to the xaxis Passing through the point P(6, 3) yintercept 1 Distance between the vertex and directrix is p . A sketch will make clear the direction of opening. Basic form of equation is 2 4 x py =...
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 Spring '08
 DELWORTH
 Algebra, Trigonometry, Equations, Conic section, directrix

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