SOLUTION: I'm not sure how to graph -x^2-4x-4. I solved to get the x intercepts which was -2. Then I got the vertex which is -2. How do I graph this?
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Question 428236: I'm not sure how to graph -x^2-4x-4. I solved to get the x intercepts which was -2. Then I got the vertex which is -2. How do I graph this? Answer by vleith(2983) (Show Source):
You can put this solution on YOUR website! Generally, for quadratics like thois, you'll need at least 3 points. If you know the vertex, then a couple of points are usually enough. You can tell which way the parabola opens based on the sign of the high order term (negative in this case, so the graph opens down)
The way to "graph" is it to pick various values of x, then solve for y. Then plot. Keep doing this until you find the vertex and enough points to make a reasonable approximation when you connect the dots thru the points you plotted
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