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Janu16
 one year ago
What is the equation of the quadratic graph with a focus of (4, 3) and a directix of y = 13?
Janu16
 one year ago
What is the equation of the quadratic graph with a focus of (4, 3) and a directix of y = 13?

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AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1as the focus is below the directrix then the graph is concave down. line of symmetry is x=4. dw:1443884034227:dw distance between the focus and directrix is 2 multiplied by the focal length. distance is 2b = 10 => focal length is b = 5 units vertex is (4. 3  (5)) => (4. 8) (x^2−h)=4a(y−k) (x−4^)2=4*(−5)(y−8) now simplify all this and get your equation

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1woops mistake wait

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1this is correct distance between the focus and directrix is 2 multiplied by the focal length. distance is 2b = 10 => focal length is b = 5 units vertex is (4. 3  (5)) => (4. 8) (x^2−h)=4b(y−k) (x−4)^2=4*(−5)(y−8) now simplify all this and get your equation

Janu16
 one year ago
Best ResponseYou've already chosen the best response.1so do you simplify both of it?

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1not both you simplify this equation (x−4)^2=4*(−5)(y−8)

Janu16
 one year ago
Best ResponseYou've already chosen the best response.1= −one twentieth (x − 4)2 + 8

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1yes i think so

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1though i could have made a mistake

Janu16
 one year ago
Best ResponseYou've already chosen the best response.1ok these are thhe my options hold on

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1the second one as you see

Janu16
 one year ago
Best ResponseYou've already chosen the best response.1other two options are same as these two but without  20

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1\(\Huge\color{green}{☺☻}\)

Janu16
 one year ago
Best ResponseYou've already chosen the best response.1Alright thx for the help and do you think you can help with another similar problem plz?

AlexandervonHumboldt2
 one year ago
Best ResponseYou've already chosen the best response.1i will try but i'm not sure i will do it
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