SOLUTION: Looking at {{{f(x)=-0.2x^2+12x+11}}} Does the graph of this equation open up or down? How did you determine this?

Question 130290: Looking at

Does the graph of this equation open up or down? How did you determine this?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Using the general equation we can use this to determine the direction in which the parabola opens up.

Remember if (ie "a" is a positive number), then the parabola opens up like this

On the other hand, if (ie "a" is a negative number), then the parabola opens down like this

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Answer:

So in our case which is less than zero. So the parabola opens down.
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