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)\"\" \"About 
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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
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\n" ); document.write( "\n" ); document.write( "So, k must be -3/2.\r
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