document.write( "Question 152388: Find the value of k if the line joining (4,k) and (3, -1) is parallel to the line y=-1/2x-9/2 \n" ); document.write( "
Algebra.Com's Answer #112014 by nabla(475) ![]() You can put this solution on YOUR website! Note that our m must be =-1/2.\r \n" ); document.write( "\n" ); document.write( "So, we can form an equation with (3,-1)\r \n" ); document.write( "\n" ); document.write( "y-(-1)=-1/2(x-3) \n" ); document.write( "y=-1/2x+1/2\r \n" ); document.write( "\n" ); document.write( "So, this is the line by which we want to find the y value at x=4.\r \n" ); document.write( "\n" ); document.write( "y=-1/2(4)+1/2=-3/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, k must be -3/2.\r \n" ); document.write( "\n" ); document.write( " |