anonymous
  • anonymous
MEDAL AND FAN!!!!!!! HELP What is the equation of the quadratic graph with a focus of (2, 0) and a directrix of y = −12
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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campbell_st
  • campbell_st
there are several ways to do this 1. use the distance formula for 2 points on the number plane, equal 2 distances and then find the equation. 2. find the focal length, the the vertex and subsequently the equation. which method do you know about..?
anonymous
  • anonymous
i think # 2 but it is hard
anonymous
  • anonymous
i think the answer is f(x)=-x^2+4x+35

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campbell_st
  • campbell_st
ok... so start by graphing the information you have..
anonymous
  • anonymous
is it correct
campbell_st
  • campbell_st
|dw:1437258617379:dw|
campbell_st
  • campbell_st
by plotting the information you can see the parabola is concave up...
campbell_st
  • campbell_st
|dw:1437258801013:dw|
anonymous
  • anonymous
so then y=x^2-4x-35
campbell_st
  • campbell_st
I truely don't think that is the answer...
campbell_st
  • campbell_st
so to start, can you tell me the distance from the focus to the directrix along the line of symmetry

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