document.write( "Question 179214: Write an equation of a line given the following information.
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document.write( "passes through the points (-2,6) and (-3,-4) can you explain each step please \n" );
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Algebra.Com's Answer #134156 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Write an equation of a line given the following information. \n" ); document.write( "passes through the points (-2,6) and (-3,-4) can you explain each step please \n" ); document.write( "------------------------ \n" ); document.write( "The hard way: \n" ); document.write( "1st, find the slope, m, of the line. \n" ); document.write( "m = (diff in y)/(diff in x) \n" ); document.write( "m = (-4 -6)/(-3 -(-2)) \n" ); document.write( "m = -10/-1 \n" ); document.write( "m = 10 \n" ); document.write( "------ \n" ); document.write( "Then, use either point in \n" ); document.write( "y-y1 = m*(x-x1) where (x1,y1) is the point. \n" ); document.write( "y-6 = 10*(x+2) \n" ); document.write( "y-6 = 10x + 20 \n" ); document.write( "y = 10x + 26 \n" ); document.write( "That's it. \n" ); document.write( "------------ \n" ); document.write( "The easy way: \n" ); document.write( "|x y 1| \n" ); document.write( "|-2 6 1| = 0 \n" ); document.write( "|-3 -4 1| \n" ); document.write( "---------------- \n" ); document.write( "x*(6+4) - y*(-2+3) + (8 + 18) = 0 \n" ); document.write( "10x -y +26 = 0 \n" ); document.write( "y = 10x + 26\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |