document.write( "Question 437302: I need to figure out how to find solution pairs so that I can turn them into points so I can graph them.\r
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document.write( "Here is an example: y=-3x
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document.write( "I tried the method substitute 0 for x and solve for y then substitute 0 for y and solve for x.
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document.write( "I don't understand this though \n" );
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Algebra.Com's Answer #302484 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! You substitute 0 for x, like this:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = -3(0)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Then solve for y. You will get y = 0, so the ordered pair (0,0) lies on the line.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "We won't substitute 0 for y, since we will actually obtain the same ordered pair. We can substitute x = 1, since x is our independent variable and the function is defined everywhere. If we substitute x = 1, y = -3(1) = -3, so (1, -3) is also on the line.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "We can connect the two points together and draw a line:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " |