document.write( "Question 358508: Find the y - intercept and the vertex......y = x^2 - 3x -4....Thank you for your help much appreciated. \n" ); document.write( "

Algebra.Com's Answer #255864 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Note: The general vertex form of a parabola,  (h,k) is the vertex\r
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document.write( "completing the square to put into the vertex form of a parabola
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document.write( "y = x^2 - 3x -4
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document.write( "y = x^2 - 3x + 9/4 - 9/4 -4
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document.write( "vertex form is:
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document.write( "y =1*(x - 3/2)^2 - 25/4
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document.write( "Vertex is (3/2, - 25/4)  a>0 Therefore parabola opens upward and vertex is the Minimum
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document.write( "y intercept is Pt(0,-4)
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