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What is the x-coordinate of the of the vertex of y equals -3x2 plus 12x-5?
Wiki User
∙ 12y ago
You can find the x-coordinate of it's vertex by taking it's derivative and solving for zero:
y = -3x2 + 12x - 5
y' = -6x + 12
0 = -6x + 12
6x = 12
x = 2
Now that we have it's x coordinate, we can plug it back into the original equation to find it's y coordinate:
y = -3x2 + 12x - 5
y = -3(2)2 + 12(2) + 5
y = -12 + 24 + 5
y = 17
So the vertex of the parabola y = -3x2 + 12x - 5 occurs at the point (2, 17).
Wiki User
∙ 12y ago
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nice attempt :) at least you couldve said some stupid crips rolling in 6 fo's with dicks or something, which ive herd before the answer is -6 -apex-
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