SOLUTION: Graph y=3x^2 -12x-3 Then state the vertex. Please help me with this problem

Question 978084: Graph y=3x^2 -12x-3
Then state the vertex.
Please help me with this problem

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

to graph it, you need several points
so, make a table
|......choose several values for and calculate
|....
|....

|....
|....
|....
plot these points and draw a parabola through:

compare to , you see that and
since the coordinate of the vertex is , we have

so,
substitute it in and calculate the coordinate of the vertex

so, the vertex is at (,)

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