Determining the number of x-intercepts and the location of the vertex.
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Without drawing the graph of the given equation, determine:
(a) how many x-intercepts the parabola has
(b) whether its vertex lies above or below the
x-axis.
y = -x^2 + 2x - 1
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Y = -x^2+2x-1 = -(x-1)^2
So we know that the parabola has only ...
Solution Summary
For a given function, the number of x-intercepts and the location of the vertex is determined, without drawing the function.
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