document.write( "Question 302041: Here's another accuplacer practice question that I have no clue about: \"write the slope intercept form of the equation (-2,0)and (7,4). The answer that lights up correct is Y=4/9x + 8/9. Can someone tell me why this is correct, and in general , how to write slope intercept forms? Thanks lots. \n" ); document.write( "
Algebra.Com's Answer #216574 by london maths tutor(243)![]() ![]() You can put this solution on YOUR website! The linear equation form = Y = m X + C\r \n" ); document.write( "\n" ); document.write( "where m = gradient and C = y intercept\r \n" ); document.write( "\n" ); document.write( "gradient = (4-0)/[7-(-2)] \n" ); document.write( "= 4/9\r \n" ); document.write( "\n" ); document.write( "Sub in one of the point (-2,0) and m = 4/9 into the linear equation:\r \n" ); document.write( "\n" ); document.write( "0 = -2(4/9) + C \r \n" ); document.write( "\n" ); document.write( "0 = -8/9 + C \n" ); document.write( "C = 8/9\r \n" ); document.write( "\n" ); document.write( "Therefore, the equation: Y = (4/9) X + (8/9) Hence shown \n" ); document.write( " |