Question 620542
Sketch the graph the parabola. Find the coordinates of the vertex.
y=-x^(2)+2x-3 
The vertex is?
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Complete the square:
y+3 = -x^2+2x
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-(x^2-2x+?) = y + 3 -?
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-(x^2-2x+1) = y + 3 -1
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-(x-1)^2 = y + 2
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Vertex: (1,-2)
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Graph::
{{{graph(400,400,-10,10,-10,10,-x^2+2x-3)}}}
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Cheers,
Stan H.
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