document.write( "Question 930078: write an equation for the line that passes through the points (-2,2)and (2,-8) \n" ); document.write( "
Algebra.Com's Answer #564690 by algebrahouse.com(1659)![]() ![]() You can put this solution on YOUR website! y2 - y1 \n" ); document.write( "------- = slope \n" ); document.write( "x2 - x1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(-2,2) and (2,-8)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-8 - 2 \n" ); document.write( "-------- = slope {substituted into slope formula} \n" ); document.write( "2 - (-2)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-10 \n" ); document.write( "---- = slope {subtracted on top and bottom} \n" ); document.write( "4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-5 \n" ); document.write( "--- = slope \n" ); document.write( "2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Point-slope form is y - y1 = m(x - x1)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(-2,2) , slope = -5/2 \n" ); document.write( "y - 2 = (-5/2)[x - (-2)] {substituted into point-slope form} \n" ); document.write( "-2y + 4 = 5(x + 2) {multiplied entire equation by -5 and simplified} \n" ); document.write( "-2y + 4 = 5x + 10 {used distributive property} \n" ); document.write( "-2y = 5x + 6 {subtracted 4 from each side} \n" ); document.write( "y = (-5/2)x - 3 {divided each side by -2}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " For more help from me, visit: www.algebrahouse.com \n" ); document.write( " \n" ); document.write( " |