document.write( "Question 156575: These are two problems, that I do not get!\r
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document.write( "Your suppose to graph a line for both of them.\r
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document.write( "3x+2y=-6\r
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document.write( "and y=-3x-1 can you help me figure these out..thanks
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Algebra.Com's Answer #115354 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! These are two problems, that I do not get! \n" ); document.write( "Your suppose to graph a line for both of them. \n" ); document.write( "3x+2y=-6 \n" ); document.write( "and y=-3x-1 can you help me figure these out..thanks \n" ); document.write( "------------------------ \n" ); document.write( "These are linear equations, meaning the graph is a straight line. All you need to graph a straight is 2 points. One way is to set x = 0 and find y, then y = 0 and find x. \n" ); document.write( "-------------------- \n" ); document.write( "3x+2y=-6 \n" ); document.write( "3*0 + 2y = -6 \n" ); document.write( "y = -3 \n" ); document.write( "So the point is (0,-3) \n" ); document.write( "Then y = 0: \n" ); document.write( "3x = -6 \n" ); document.write( "x = -2 \n" ); document.write( "That point is (-2,0) \n" ); document.write( "The line thru them extending forever in both directions, is the graph. \n" ); document.write( "------------------ \n" ); document.write( "y=-3x-1 \n" ); document.write( "y=-1 --> (0,-1) one point \n" ); document.write( "0=-3x-1 \n" ); document.write( "x = -1/3 --> (-1/3,0) 2nd point \n" ); document.write( "Sometimes the 2 points will be so close together that you lose accuracy in the paper graph and it's better to find another point. \n" ); document.write( "You can set x (or y) equal to any value and solve for the other. \n" ); document.write( "--------------- \n" ); document.write( "Set x=5 \n" ); document.write( "y = -3*5 -1 \n" ); document.write( "y = -16 ---> (5,-16)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |