document.write( "Question 440689: a. Find the co-ordinates of the vertex and the
\n" ); document.write( "focus of the parabola x^2=4(x+y).
\n" ); document.write( "Find the foci and vertices of the hyperbola
\n" ); document.write( "9 x^2 - y^2 - 36x +8y - 5 = 0 . \n" ); document.write( "

Algebra.Com's Answer #304422 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "a. Find the co-ordinates of the vertex and the focus of the parabola 
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document.write( " x2=4(x+y)
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document.write( " x^2 - 4x = 4y
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document.write( " (x-2)^2 - 4 = 4y  OR (x-2)^2 = 4(y+1)
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document.write( "Using the vertex form of a parabola,  where(h,k) is the vertex
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document.write( " 1/4(x-2)^2 - 1 = y   Vertex (2,-1)
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document.write( " The standard form is , where  the focus is (h,k + p) 
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document.write( "                        (x-2)^2 = 4(y+1)  4p = 4 , p = 1 focus(2,0)\r
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