A Solar Oven Uses a Parabolic Reflector to Focus the Sun's

question 56

Multiple Choice

A solar oven uses a parabolic reflector to focus the sun's rays at a point 7 inches from the vertex of the reflector (see figure) . L = 7 inches ​
Write an equation for a cross section of the oven's reflector with its focus on the positive y axis and its vertex at the origin.

• A) \(y = 28 x ^ { 2 }\)
• B) \(y = \frac { 1 } { 7 } x ^ { 2 }\)
• C) \(x ^ { 2 } = 28 y\)
• D) \(y ^ { 2 } = 7 x\)
• E) \(x ^ { 2 } = 7 y\)

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