Question

Which describes the difference between the graph of f(x) = 4x2 and g(x) = -8x2?
A) The graph of g(x) is obtained by flipping f(x) over the y-axis and stretching vertically by a factor of 2.
B) The graph of g(x) is obtained by flipping f(x) over the x-axis and compressing vertically by a factor of 2.
Eliminate
C) The graph of f(x) is obtained by flipping g(x) over the x-axis and stretching vertically by a factor of 2.
D) The graph of f(x) is obtained by flipping g(x) over the y-axis and compressing vertically by a factor of 2.

Answer 1

The parent function is f(x) = ax^2 + bx + c.
A sign in front of a reflects it across the x-axis.

Answer 2

no i got it. thank you though.

Answer 3

And the value of a vertically stretches or compresses the graph.
Oh ok no problem