SOLUTION: Does this parabola open upward or downward? How do you know?
y=-3x^2
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Question 618931: Does this parabola open upward or downward? How do you know?
y=-3x^2
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
The co-efficient of x^2 is negative.
So the graph opens downward
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