document.write( "Question 38749: A line passing through (9,8) and (7,y) is parallel to a line with slope -1. What is the value of y?\r
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Algebra.Com's Answer #24245 by Nate(3500)![]() ![]() ![]() You can put this solution on YOUR website! Use point-slope form: \n" ); document.write( "y - yp = m(x - xp) where the variable and 'p' are the points *use (9,8)* \n" ); document.write( "y - 8 = (-1)(x - 9) \n" ); document.write( "y - 8 = -x + 9 \n" ); document.write( "y = -x + 17 \n" ); document.write( "Now, plug in (7,y): \n" ); document.write( "y = -x + 17 \n" ); document.write( "y = -7 + 17 \n" ); document.write( "y = 10 \n" ); document.write( "So, the ordered pair is: (7,10) \n" ); document.write( " |