document.write( "Question 247823: Please help with the following equation:
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document.write( "Write an equation of the line containing the specified point and parallel to the indicated line (3,-4), 5x-6y=4 I think I need to plug the points 3 and -4 in for x and y and solve but I am confused how to remove them both from the same side of the equation. Thank you for any help! \n" );
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Algebra.Com's Answer #180680 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! plug them in and you get \n" ); document.write( "5(x)-6(y)=4 \n" ); document.write( "x=3 \n" ); document.write( "y=-4 \n" ); document.write( "5(3)-6(-4)=4 \n" ); document.write( "15+24=4 \n" ); document.write( "39=4 \n" ); document.write( "but 39 doesn't equal 4 \n" ); document.write( "That tells use that the point is not on that line. \n" ); document.write( "But the problem already told us that. \n" ); document.write( "The equation 5x-6y=4 is another line. \n" ); document.write( "We want one that is parallel to that line. \n" ); document.write( "and goes through the point(3,-4) where x=3 and y=-4\r \n" ); document.write( "\n" ); document.write( "solve for y \n" ); document.write( "5x-6y=4 \n" ); document.write( "5x=6y+4 \n" ); document.write( "subtract 4 from both sides \n" ); document.write( "5x-4=y \n" ); document.write( "y=5x-4 \n" ); document.write( "y=mx+b \n" ); document.write( "m is the slope and b is the y intercept \n" ); document.write( "which means that if x=0 then y is b \n" ); document.write( "so 5 is the slope and it goes through (0,-4) \n" ); document.write( "so we want a line of the same slope but goes through (3,-4) \n" ); document.write( "we see that x is three more than (0,-4) \n" ); document.write( "y=mx+b \n" ); document.write( "we know x,y and m \n" ); document.write( "-4=5(3)+b \n" ); document.write( "-4=15+b \n" ); document.write( "subtract 15 from both sides \n" ); document.write( "-19=b \n" ); document.write( "so now we can make the new equation \n" ); document.write( "y=mx+b where m=5 and b=-19 \n" ); document.write( "y=5x-19 is a line parallel to the given line and goes through (3,-4) \n" ); document.write( "and has the y intercept (0,-19)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |