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Mathematics 17 Online
undeadknight26 (undeadknight26):

What happens to the graph: When f(x) becomes −2 • f(x)?

undeadknight26 (undeadknight26):

@AngelWilliams16

undeadknight26 (undeadknight26):

I said the graph shrinks.

ganeshie8 (ganeshie8):

hey see http://www.mathsisfun.com/sets/function-transformations.html

ganeshie8 (ganeshie8):

y = k*f(x) stretches the graph vertically by a factor of k if k > 1

undeadknight26 (undeadknight26):

So negative would shrink the graph...alright thanks :D

ganeshie8 (ganeshie8):

y = -f(x) reflects the graph over x axis

ganeshie8 (ganeshie8):

no wait please

ganeshie8 (ganeshie8):

it is a combination of two different transformations

undeadknight26 (undeadknight26):

So it would shrink it AND reflect it over the x axis?

ganeshie8 (ganeshie8):

f(x) 2*f(x) stretches vertically by a factor of 2 -2*f(x) reflects the graph over x axis

ganeshie8 (ganeshie8):

overall : it is a vertical stretch followed by a reflection over x axis

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