SOLUTION: Hello math tutor. i need help on graphing this. i need to Graph the function: the axis of symmetry, the vertex, and the x-intercepts. Problem:{{{ y=-2x^2+x-4 }}} Thank You!

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Question 596480: Hello math tutor. i need help on graphing this. i need to Graph the function: the axis of symmetry, the vertex, and the x-intercepts.
Problem:
Thank You!

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
The axis of symmetry is a vertical line through
the x-coordinate of the vertex
The vertex is at when the equation
is in the form


Now find



The vertex is at ( 1/4, -31/8 )
The axis of symmetry is
-------------------------------
Find the x-intercepts by setting
:
:
Use the quadratic formula







and

The roots are imaginary, so there are no x-intercepts
here's a plot:

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