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Vinvika [58]
3 years ago
10

The axis of symmetry for the graph of the function f(x) = 3x2 + bx + 4 is x = 3/2 . What is the value of b?

Mathematics
2 answers:
kvasek [131]3 years ago
6 0
The axis of symmety is the x value of the vertex

to find the x value of the vertex of ax^2+bx+c=0
x value=-b/2a

3x^2+bx+4=0
3/2=vertex

-b/2(3)=3/2
-b/6=3/2
times 6
-b=18/2
-b=9
times -1
b=-9
gregori [183]3 years ago
5 0

the correct answer is B=-9

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