Question 721659: Find the line of summetry.
f(x)=3x2 - 12x + 7
Possible answers:
A) (-2,5)
B) (5,-2)
C) (-5,2)
D) (2,-5)
E) None
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Find the line of summetry.
f(x)=3x2 - 12x + 7
Possible answers:
A) (-2,5)
B) (5,-2)
C) (-5,2)
D) (2,-5)
E) None
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The LOS is x = -b/2a = 12/6
x = 2
----
None of A thru D are lines, they're points.
--> E) None
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f(2) = -5 makes the vertex (2,-5)
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