document.write( "Question 71028: Solve the system by graphing.
\n" ); document.write( " 3x – y = 1
\n" ); document.write( " 3x – y = 2
\n" ); document.write( "thanks
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Algebra.Com's Answer #50758 by Alg_Whiz_Kid(6)\"\" \"About 
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3x – y = 1
\n" ); document.write( "3x – y = 2\r
\n" ); document.write( "\n" ); document.write( "Okay, here's how you do it. I used the slope formula, y = mx + b. First you need to get y by itself, that way you can graph. So for the first one, 3x - y = 1, you're going to move the x over to the right, making it -y = -3x + 1. You need the y to be positve, so divide by a negative, or change the signs of everything. Now you have y = 3x - 1. The y intercept is -1 so put a point at (0,-1). Then you can use a T-Table or the slope. I use the slope because it's easier, so here is how you can do it with the slope:
\n" ); document.write( "Change the 3 to 3/1, that way you know the rise and the run, so from the point (0,-1), go up 3 and right 1, and then do it again and make your line!
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