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 April 10th, 2013, 02:59 PM #1 Member   Joined: Jan 2013 Posts: 37 Thanks: 0 Is my answer correct? Suppose that (-24,12) is a point of some function y=f(x). Find its image point if it has the following transformations defined by $y=\sqr{4*f(x+3)+5}-2$ My solution it shifts left 3 units ... (-27,12) it is vertically expanded by 4 ... (-27,4 it shifts 5 units up ... (-27,53) the y coordinate is square-rooted ... (-27,$\sqrt{53}$) it shifts 2 units down ... (-27,$\sqrt{53}-2$) I don't have the answer for this question. Could someone please check and see if it is correct? Thanks.
 April 10th, 2013, 04:13 PM #2 Global Moderator     Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4 Re: Is my answer correct? Looks good.
 April 12th, 2013, 06:45 PM #3 Member   Joined: Jan 2013 Posts: 37 Thanks: 0 Re: Is my answer correct? When I showed my solution to a friend of my friend, he said that it is wrong. I really don't see why it is wrong. Please help me. Thanks.
April 12th, 2013, 07:50 PM   #4
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Quote:
 Originally Posted by dennisdixon it shifts left 3 units ... (-27,12)
Shouldn't that be a right shift...(-21,12) ?

 April 12th, 2013, 09:06 PM #5 Global Moderator   Joined: Dec 2006 Posts: 20,975 Thanks: 2224 No.
April 13th, 2013, 09:59 AM   #6
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Re:

Quote:
 Originally Posted by skipjack No.
NO it is! Should have googled "image point"

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