SOLUTION: y=-x^2-3x-2 Thanks, M

Question 23330: y=-x^2-3x-2
Thanks,
M
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
What did you want to do with this, just graph it? Of course, it is a parabola, and it opens downward, because of the negative x^2 term.

There are several ways to find the vertex of this. I think the easiest way is to use a formula for the vertex that comes from the quadratic formula. Remember that? Well, this formula is just the first part of this without the radical. It turns out the vertex of a parabola (which opens up or down!) is always at

In your case, , a=-1 and b=-3, so .

Now, if x=1, then

Vertex is at (,).

Check it out with the graph:

Does this graph look like the vertex is at (,), and does the graph open down?

R^2 at SCC.

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