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lovely8458
11.12.2019 •
Mathematics
What are the coordinates of the vertex of the graph of the function y = –3x² –12x + 3? a. (–2, 29) b. (2, –15) c. (2, –9) d. (–2, 15)
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Ответ:
D (-2,15)
Step-by-step explanation:
To find the vertex from the standard form of the equation, use the formula x = -b/2a. Then substitute the x value into the equation to find the y value.
Here a = -3 and b = -12.
So x = -(-12) / 2(-3) = 12 / -6 = -2.
Substitute x = -2 and solve for y.
y = -3(-2)^2 - 12(-2) + 3
y = -3(4) + 24 + 3
y = -12 + 24 + 3
y = 12 + 3
y = 15
Ответ:
idk if this is to one specific person or everyone but if its to everyone then thank you!
Step-by-step explanation: