document.write( "Question 1188374: Let f(x)=−3x. The graph of f(x)is transformed into the graph of g(x) by a vertical stretch of 4 units and a translation of 4 units right.\r
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document.write( "What is the equation for g(x)? \n" );
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Algebra.Com's Answer #819436 by ikleyn(52847)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Let f(x)=−3x. The graph of f(x)is transformed into the graph of g(x) by a vertical stretch \n" ); document.write( "of 4 units and a translation of 4 units right. What is the equation for g(x)? \n" ); document.write( "~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "The new function g(x) is\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " g(x) = 4*f(x-4) = 4*(-3(x-4)) = -12*(x-4). ANSWER\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "I multiply f(x) by 4 to provide vertical stretch of 4 units, and I replace the argument \"x\" of the function f(x)\r\n" ); document.write( "\r\n" ); document.write( "by (x-4) to translate the plot 4 units right.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved and explained.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "===================\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "comment from student : Thank you! One question. Since it's translating to \n" ); document.write( "the right, wouldn't it be -12 (x+4) though ?\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "My response : NO.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is a common MISTAKE to think that moving plot 4 units right requires using (x+4)\r \n" ); document.write( "\n" ); document.write( "instead of x. With such level of knowledge the LOW SCORE is GUARANTEED.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The correct rule is EXACTLY as it is stated in my post.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "////////////////\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To see many other similar and different problems solved, look into the lesson \r \n" ); document.write( "\n" ); document.write( " - HOW TO write functions for transformed plots \r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Learn the subject from there . . . \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |