document.write( "Question 251288: what is the y intercept from the following example. triangle RST has a scale factor of 1/2 and coordinates of the following r( 0, 2) s(6, -4) T( -4,-12) i keep getting -22/5 and the real answer is -17/5 with a slope of 4/5. the slope is no problem but how are they getting -17/5 ???? \n" ); document.write( "
Algebra.Com's Answer #184423 by drk(1908)![]() ![]() ![]() You can put this solution on YOUR website! We know that \n" ); document.write( "R(0,2), S(6,-4), and T (-4,-12). \n" ); document.write( "Applying a scale factor of 1/2, we get \n" ); document.write( "R'(0,1), S'(3,-2), and T'(-2,-6).\r \n" ); document.write( "\n" ); document.write( "The slope of ST = slope of S'T' = 4/5. \n" ); document.write( "The Y-intercept of S'T' = -22/5. \n" ); document.write( "The Y-intercept of ST = -44/5.\r \n" ); document.write( "\n" ); document.write( "I don't see anything wrong with your answer. Is it possible that the \"real\" answer or book answer is incorrect? \n" ); document.write( " \n" ); document.write( " |