Chapter 11: Q29. (page 789)
Use a graphing device to graph the parabola.
The graph of parabola is
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Families of Parabolas
(a) Find equations for the family of parabolas with the given description.
(b) Draw the graphs. What do you conclude?
The family of parabolas with vertex at the origin, focus on the positive -axis, and with focal diameters and
Graphing Ellipses An equation of an ellipse is given. (a) Find the vertices, foci, and eccentricity of the ellipse.
(b) Determine the lengths of the major and minor axes. (c) Sketch a graph of the ellipse.
An equation of a parabola is
given.
(a) Find the focus, directrix, and focal diameter of the
parabola.
(b) Sketch a graph of the parabola and its directrix.
The graph of the equation is a parabola with focus
F(______,______) and directrix y = _________ . So the graph of
is a parabola with focus F(_____,_____) and directrix
Y = __________.
Find an equation
for the ellipse whose graph is shown.
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