document.write( "Question 1025727: Find a formula for the linear function whose graph intercepts the x-axis at x=80 and the y-axis at y= -90 \n" ); document.write( "
Algebra.Com's Answer #641027 by FrankM(1040)![]() ![]() You can put this solution on YOUR website! This problem is easily solved using standard form -\r \n" ); document.write( "\n" ); document.write( "Ax+By=C\r \n" ); document.write( "\n" ); document.write( "First C is the LCM, least common multiple of 80 and 90, which is 720.\r \n" ); document.write( "\n" ); document.write( "Now Ax+By=720\r \n" ); document.write( "\n" ); document.write( "When x=0, By=720, B(-90)=720 , and B is -8 \n" ); document.write( "When y=0, Ax=720, A(80)=720 , and A is 9\r \n" ); document.write( "\n" ); document.write( "9x-8y=720\r \n" ); document.write( "\n" ); document.write( "There are longer ways to solve. You have an intercept and can calculate a slope, etc. This is the fastest, and you can rearrange if other form is required. \n" ); document.write( " |