document.write( "Question 28968: a line that passes through the points (-2,4) and (2,-1). what are the rise and the run of the line? at first i got the answer: the run 4, the rise 5, but it wasn't right. now i think it's -4 and -5. am i right? \n" ); document.write( "
Algebra.Com's Answer #15819 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Your y values are going from 4 to -1; that is a decrease of 5 \n" ); document.write( "Your x values are going from -2 to 2; that is an increase of 4 \n" ); document.write( "So the \"run\" is 4 and the \"rise\" is -5 \n" ); document.write( "The general way of doing this is to subtract one y-value from \n" ); document.write( "the other and then to subtract the CORRESPONDING x-values. \n" ); document.write( "Doing this you could have either of the following: \n" ); document.write( "[-1-4]/(2-(-2)]=-5/4 \n" ); document.write( "or you could have: \n" ); document.write( "[4-(-1)[/[-2-2]= 5/(-4) \n" ); document.write( "In both cases the final answer is -5/4 \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |