document.write( "Question 364576: Suppose you are given a parabola with 2 points that have the same y-value such as (-3,11) and (6,11). Explain how to find the equation for the axis of symmetry of this parabola, and then determine the equation.\r
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Algebra.Com's Answer #259995 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi, 
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document.write( "Pt(-3,11) and Pt(6,11) are points on the parabola 
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document.write( "axis of symmetry would be x = 3/2 (half way between -3 and 6, ) 
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document.write( "6 - 9/2 = 3/2 Or -3 + 9/2 = 3/2 
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document.write( "y = ax^2 + bx + c  
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document.write( "3/2 = -b/2a  
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document.write( "b =3 a = -1
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document.write( "y = -x^2 + 3x + c
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document.write( "using ordered pair (-3,11)
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document.write( "11 = -9 - 9 + c
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document.write( "29 = c
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document.write( "y = -x^2 + 3x + 29
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