SOLUTION: I need help with this kind of problem: Find the vertex, the y-intercept, and symmetric point, and use these to sketch a graph. y=2x^2 -11x -12 I am having problems solving for t

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Question 107371: I need help with this kind of problem:
Find the vertex, the y-intercept, and symmetric point, and use these to sketch a graph.
y=2x^2 -11x -12
I am having problems solving for the vertex.
Answer by Annabelle1(69) About Me  (Show Source):
You can put this solution on YOUR website!
This is a quadratic. There is a formula you can use to find the vertex.
x=-b%2F2a
this will give you the line of symmetry which is also the x value of the vertex.
Sub the x value bank into your original equation to find the y value.