posted by Lucy

Which of the following results in the graph of f(x)=x^2 being expanded vertically by a factor of 3 and reflected over the x-axis?
a) f(x)= (1/3)x^2
b) f(x)= -3x^2
c) f(x)= (-1/x^2)+3
d) f(x)=(-1/3)x^2

1. Damon

I agree about the sign change but your answer d makes the graph shorter, not taller. I think b)

2. Anonymous

1/4x-1/8x=3-1/16

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