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27 votes
Which of the following describes the translation of the graph y = 3 cos x + 2 with respect to y = cos x?

Which of the following describes the translation of the graph y = 3 cos x + 2 with-example-1
User Adavea
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1 Answer

26 votes
26 votes

In our case the parent function is y=cos x. If we stretch the amplitud by 3 units, we get


y=3\text{cosx}

and finally, if we translate this function 2 units up, we have


y=3\text{cosx}+2

which correspond to the second option from top to bottom.

User Jeffrey Mixon
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2.5k points