document.write( "Question 359744: I am trying to make a graph and the equation is: y= -x-2.
\n" ); document.write( "How do I solve this? I know the formula is: y=mx+b. Would the x be zero?
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Algebra.Com's Answer #256740 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
No, x and y are the variables.
\n" ); document.write( "When \"x=0\", \"y=-2\".
\n" ); document.write( "(0,-2)
\n" ); document.write( "Plot that point.
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\n" ); document.write( "Now you can do it one of two ways.
\n" ); document.write( "Generate another point using the function or use the slope.
\n" ); document.write( "To generate another point, pick another x.
\n" ); document.write( "When \"x=2\", \"y=-2-2=-4\"
\n" ); document.write( "(2,-4)
\n" ); document.write( "Plot that point, connect the points with a line.
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\n" ); document.write( "The other way is to use the slope, \"m\".
\n" ); document.write( "In this case, \"m=-1\"
\n" ); document.write( "THe slope is the change in y divided by the change in x.
\n" ); document.write( "So if I move 1 unit in the x, then I move -1 units in the y.
\n" ); document.write( "To get another point, start with the y-intercept, (0,-2).
\n" ); document.write( "X:\"0%2BDELTA%2Ax=0%2B1=1\"
\n" ); document.write( "Y:\"-2%2BDELTA%2Ay=-2-1=-3\"
\n" ); document.write( "(-1,-3) is another point on the line.
\n" ); document.write( "Plot it and connect the points with a line.
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\n" ); document.write( "It's the same line. If I had moved 2 units in the x then I would have moved -2 units in the y (since \"m=-2%2F2=-1\", then I would have been at point (3,-2).
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