document.write( "Question 442014: how do you know when there is an x intercept? for example, it says: For each example, find the vertex, the axis of symmetry, the y intercept, the x intercepts if any, and graph. (This is the problem: y=1/2(x+3)^2-1 \n" ); document.write( "
Algebra.Com's Answer #305173 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi
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document.write( "Note: vertex form of a parabola, \"y=a%28x-h%29%5E2+%2Bk\" where(h,k) is the vertex
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document.write( "y=1/2(x+3)^2-1  |a = .5 > 0  Parabola opens upward.
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document.write( "Vertex(-3,-1) Line of symmetry is x = -3
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document.write( " y = .5*9-1 when x = 0  y-intercept is (0,7/2)
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document.write( " 0 = .5(x+3)^2 - 1
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document.write( " 2 = (x+3)^2
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document.write( " ±\"sqrt%282%29\"-3 = x when y = 0  x-intercepts are (-4.4142,0) and (-1.5858, 0)
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document.write( "ewatrrr@aol.com
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document.write( "private/pay tutoring Inquiries only, please. 
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