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HELP PLEASE
A mirror with a parabolic cross section is used to collect sunlight on a pipe located at the focus of the mirror. The pipe is located 2 inches from the vertex of the mirror. Write an equation of the parabola that models the cross section of the mirror. Assume that the parabola opens upward.
 one year ago
 one year ago
HELP PLEASE A mirror with a parabolic cross section is used to collect sunlight on a pipe located at the focus of the mirror. The pipe is located 2 inches from the vertex of the mirror. Write an equation of the parabola that models the cross section of the mirror. Assume that the parabola opens upward.
 one year ago
 one year ago

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FeoNeo33Best ResponseYou've already chosen the best response.1
height of the parabola in inches: Take the formula to be y = ax^2 The focus of the parabola is 2 inches up, which means a/4 = 2 ==> a = 8... the equation is: y = 8x^2
 one year ago

Bailey.NaeBest ResponseYou've already chosen the best response.1
thank you , what if it was 6 inches?
 one year ago

Bailey.NaeBest ResponseYou've already chosen the best response.1
I would do the same thing right?
 one year ago

FeoNeo33Best ResponseYou've already chosen the best response.1
Replace the 2 with a 6. Which means a/4 = 2 ==> a = 8.  a/4 = 6 ==> a = 24. y = 24x^2
 one year ago

Bailey.NaeBest ResponseYou've already chosen the best response.1
why would it always be four?
 one year ago

FeoNeo33Best ResponseYou've already chosen the best response.1
Yeah, I believe so. I think it's just the formula. I'll check very quickly for you tho.
 one year ago

Bailey.NaeBest ResponseYou've already chosen the best response.1
Noo noo , you don't have to i believe you lol I was just wondering , but thank you So much (:
 one year ago

FeoNeo33Best ResponseYou've already chosen the best response.1
Whoops, y = ax^2 is the formula, I guess whatever the 'x' is, but at least you have the answer. Off to other post, later, welcome.
 one year ago
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