document.write( "Question 674016: I need to find the vertex, focus, directrix and axis of symmetry of each parabola
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document.write( "6x+y^2=0\r
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document.write( "I know (y+0)^2 is part of a formula but what do I do with the 6x since there is no square?\r
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document.write( "another problem is x^2=y+2x Can you tell me how to set this one up?
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document.write( "Thank you! \n" );
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Algebra.Com's Answer #419317 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! I need to find the vertex, focus, directrix and axis of symmetry of each parabola \n" ); document.write( "6x+y^2=0 \n" ); document.write( "y^2=-6x \n" ); document.write( "This is an equation of a parabola that open leftwards. \n" ); document.write( "Its standard form: (y-k)^2=4p(x-h), (h,k)=(x,y) coordinates of the vertex \n" ); document.write( "For given equation: y^2=-6x \n" ); document.write( "vertex:(0,0) \n" ); document.write( "axis of symmetry: y=0 \n" ); document.write( "4p=6 \n" ); document.write( "p=6/4=3/2 \n" ); document.write( "focus: (-3/2,0) (p-distance left of vertex on axis of symmetry \n" ); document.write( "directrix: x=3 (p-distance right of vertex on axis of symmetry) \n" ); document.write( ".. \n" ); document.write( "x^2=y+2x \n" ); document.write( "y=x^2-2x \n" ); document.write( "This is an equation of a parabola that open upwards. \n" ); document.write( "Its standard form:y=A(x-h)^2+k, (h,k)=(x,y) coordinates of the vertex, A>0, curve opens upwards, A<0, curve opens downwards. \n" ); document.write( "for given equation: y=x^2-2x \n" ); document.write( "complete the square \n" ); document.write( "y=(x^2-2x+1)-1 \n" ); document.write( "y=(x-1)^2-1 \n" ); document.write( "rewrite to standard form of first equation above \n" ); document.write( "(x-1)^2=(y+1) \n" ); document.write( "vertex: (1,-1) \n" ); document.write( "axis of symmetry: x=1 \n" ); document.write( "4p=1 \n" ); document.write( "p=1/4 \n" ); document.write( "focus: (1,-3/4) (p-distance above vertex on axis of symmetry) \n" ); document.write( "directrix: y=-5/4 (p-distance below vertex on axis of symmetry) \n" ); document.write( " \n" ); document.write( " |