SOLUTION: find the axis of symmetry,vertex,y-intercept,and then graph y=2x^2-4x-1

Question 828353: find the axis of symmetry,vertex,y-intercept,and then graph y=2x^2-4x-1
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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y = 2x^2 - 4x - 1
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the above quadratic equation is in standard form, with a=2, b=-4, and c=-1
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to solve the quadratic equation, by using the quadratic formula, copy and paste this:
2 -4 -1
into this solver: https://sooeet.com/math/quadratic-equation-solver.php
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the axis of symmetry is: x = 1
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the quadratic vertex is a minimum at: ( 1, -3 )
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the y-intercept is: ( 0, -1 )
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graph:
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
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