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The graph forms a “U” shape.
Ø
The equations have x squared ( x2 ) and y is not
squared |
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Satellite Dish
Ø
Microphone at sidelines of football games, to hear the
“crunch” at the line of scrimmage.
Ø
Flashlight
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Antique candle with parabolic reflector
Ø
Some TV antennas
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Solar “cigarette” lighter
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Solar Hot Dog cooker
|
Ø
What makes the satellite dish, microphone, and flashlight
work?
Ø
Why are the sound waves and light rays amplified in a
parabola?
Ø
How do you “find” or know where to locate the focus?
|
Ø
What a parabola is.
Ø
The Geometric definition of a parabola.
Ø
The vocabulary words: focus, directrix, vertex, axis of
symmetry, parabola, and parabolic.
Ø
What the Algebraic equation of a parabola looks like.
Ø
How to graph a parabola using a chart or table of points.
Ø
Why the focus is so important in everyday applications of
parabolas. It acts like a
natural amplifier for sound waves and light rays.
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