SOLUTION: How many X-intercepts does the parabola have? Does its vertex lie above below or on the X-axis?
Can some help me solve?
Y=-X^2+2X-1
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-> SOLUTION: How many X-intercepts does the parabola have? Does its vertex lie above below or on the X-axis?
Can some help me solve?
Y=-X^2+2X-1
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Question 33451: How many X-intercepts does the parabola have? Does its vertex lie above below or on the X-axis?
Can some help me solve?
Y=-X^2+2X-1 Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The determinant = b^2-4C
= (4-4/-2=0
The parabola touches the x-axis at one point, x=1
You can see this if you factor:
y=-(x^2-2x+1)
y=-(x-1)^2
y will be zero when x=1
Cheers,
Stan H.
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