SOLUTION: The vertex of y = -3x²- 6x - 9 lies in which quadrant?
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Question 953084: The vertex of y = -3x²- 6x - 9 lies in which quadrant?
Found 2 solutions by Alan3354, rothauserc:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The vertex of y = -3x²- 6x - 9 lies in which quadrant?
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vertex at x = -b/2a = 6/-6 = -1
y(-1) = -3 + 6 - 9 = -6
--> (-1,-6) in Q3
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
The vertex lies in quadrant III, here is the graph
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