SOLUTION: please help! i need to identify the axis of symmetry and create a sutible table of values then graph the equation i can graph the equation i need help doing it. y=x^2-4x

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: please help! i need to identify the axis of symmetry and create a sutible table of values then graph the equation i can graph the equation i need help doing it. y=x^2-4x      Log On


   



Question 80817: please help! i need to identify the axis of symmetry and create a sutible table of values then graph the equation i can graph the equation i need help doing it.
y=x^2-4x

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
i need to identify the axis of symmetry and create a sutible table of values then graph the equation i can graph the equation i need help doing it.
y=x^2-4x
i need to identify the axis of symmetry and create a sutible table of values then graph the equation i can graph the equation i need help doing it.
y=x^2-4x
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Axis of symmetry is x=-b/2a = -(-4)/2= 2
It is the line x=-2
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If x=2, y=-4
If x=1 or 3, y=-3
If x=0 or 4, y=0
If x=-1 or 5, y=5
etc.
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graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2-4x%29
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Cheers,
Stan H.