SOLUTION: Given the function f(x) = 3x2-2x-1, graph f(x) labeling the x and y intercept(s), vertex, and axis of symmetry.

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Question 135244: Given the function f(x) = 3x2-2x-1, graph f(x) labeling the x and y intercept(s), vertex, and axis of symmetry.
Answer by smarty1994(10) About Me  (Show Source):
You can put this solution on YOUR website!
Okay, so you'd label the coefficients a, b, and c. (I find it less confusing that way.)
Then plug it into the quadratic formula.

You get x=1.7 & x=-1

Plug each back into the original equation. You get (1.7,4.3) & (-1,4).

To find the vertex, plug the correct numbers into the formula, x=-b/2a.
Plug that answer (.3) into the original equation to find y.
The vertex is (.3,-1.3).

The axis of symmetry is y=-1.3

**I did this using the Quadratic Solver, but found it very confusing.