document.write( "Question 104487: what is the graphical solution of the equation x-y=-2,x=3y=14 \n" ); document.write( "
Algebra.Com's Answer #76035 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
the graphical solution of the equation
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\n" ); document.write( "\"x+-+y+=+-2\" \r
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Solved by pluggable solver: Graphing Linear Equations

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\n" ); document.write( " \"1%2Ax-1%2Ay=-2\"Start with the given equation
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\n" ); document.write( " \"-1%2Ay=-2-1%2Ax\" Subtract \"1%2Ax\" from both sides
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\n" ); document.write( " \"y=%28-1%29%28-2-1%2Ax%29\" Multiply both sides by \"-1\"
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\n" ); document.write( " \"y=%28-1%29%28-2%29%2B%281%29%281%29x%29\" Distribute \"-1\"
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\n" ); document.write( " \"y=2%2B%281%29x\" Multiply
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\n" ); document.write( " \"y=1%2Ax%2B2\" Rearrange the terms
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\n" ); document.write( " \"y=1%2Ax%2B2\" Reduce any fractions
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\n" ); document.write( " So the equation is now in slope-intercept form (\"y=mx%2Bb\") where \"m=1\" (the slope) and \"b=2\" (the y-intercept)
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\n" ); document.write( " So to graph this equation lets plug in some points
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\n" ); document.write( " Plug in x=-9
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\n" ); document.write( " \"y=1%2A%28-9%29%2B2\"
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\n" ); document.write( " \"y=-9%2B2\" Multiply
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\n" ); document.write( " \"y=-7\" Add
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\n" ); document.write( " So here's one point (-9,-7)
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\n" ); document.write( " Now lets find another point
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\n" ); document.write( " Plug in x=-8
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\n" ); document.write( " \"y=1%2A%28-8%29%2B2\"
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\n" ); document.write( " \"y=-8%2B2\" Multiply
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\n" ); document.write( " \"y=-6\" Add
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\n" ); document.write( " So here's another point (-8,-6). Add this to our graph
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\n" ); document.write( " Now draw a line through these points
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\n" ); document.write( " So this is the graph of \"y=1%2Ax%2B2\" through the points (-9,-7) and (-8,-6)
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\n" ); document.write( " So from the graph we can see that the slope is \"1%2F1\" (which tells us that in order to go from point to point we have to start at one point and go up 1 units and to the right 1 units to get to the next point) the y-intercept is (0,\"2\")and the x-intercept is (\"-2\",0) . So all of this information verifies our graph.
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\n" ); document.write( " We could graph this equation another way. Since \"b=2\" this tells us that the y-intercept (the point where the graph intersects with the y-axis) is (0,\"2\").
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\n" ); document.write( " So we have one point (0,\"2\")
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\n" ); document.write( " Now since the slope is \"1%2F1\", this means that in order to go from point to point we can use the slope to do so. So starting at (0,\"2\"), we can go up 1 units
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\n" ); document.write( " and to the right 1 units to get to our next point
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\n" ); document.write( " Now draw a line through those points to graph \"y=1%2Ax%2B2\"
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\n" ); document.write( " So this is the graph of \"y=1%2Ax%2B2\" through the points (0,2) and (1,3)
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\n" ); document.write( "\"x+-+3y+=+14\" I guess, here is \"-3y\"\r
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Solved by pluggable solver: Graphing Linear Equations

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\n" ); document.write( " \"1%2Ax-3%2Ay=14\"Start with the given equation
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\n" ); document.write( " \"-3%2Ay=14-1%2Ax\" Subtract \"1%2Ax\" from both sides
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\n" ); document.write( " \"y=%28-1%2F3%29%2814-1%2Ax%29\" Multiply both sides by \"-1%2F3\"
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\n" ); document.write( " \"y=%28-1%2F3%29%2814%29%2B%281%2F3%29%281%29x%29\" Distribute \"-1%2F3\"
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\n" ); document.write( " \"y=-14%2F3%2B%281%2F3%29x\" Multiply
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\n" ); document.write( " \"y=%281%2F3%29%2Ax-14%2F3\" Rearrange the terms
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\n" ); document.write( " \"y=%281%2F3%29%2Ax-14%2F3\" Reduce any fractions
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\n" ); document.write( " So the equation is now in slope-intercept form (\"y=mx%2Bb\") where \"m=1%2F3\" (the slope) and \"b=-14%2F3\" (the y-intercept)
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\n" ); document.write( " So to graph this equation lets plug in some points
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\n" ); document.write( " Plug in x=-7
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\n" ); document.write( " \"y=%281%2F3%29%2A%28-7%29-14%2F3\"
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\n" ); document.write( " \"y=-7%2F3-14%2F3\" Multiply
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\n" ); document.write( " \"y=-21%2F3\" Add
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\n" ); document.write( " \"y=-7\" Reduce
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\n" ); document.write( " So here's one point (-7,-7)
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\n" ); document.write( " Now lets find another point
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\n" ); document.write( " Plug in x=-4
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\n" ); document.write( " \"y=%281%2F3%29%2A%28-4%29-14%2F3\"
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\n" ); document.write( " \"y=-4%2F3-14%2F3\" Multiply
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\n" ); document.write( " \"y=-18%2F3\" Add
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\n" ); document.write( " \"y=-6\" Reduce
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\n" ); document.write( " So here's another point (-4,-6). Add this to our graph
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\n" ); document.write( " Now draw a line through these points
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\n" ); document.write( " So this is the graph of \"y=%281%2F3%29%2Ax-14%2F3\" through the points (-7,-7) and (-4,-6)
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\n" ); document.write( " So from the graph we can see that the slope is \"1%2F3\" (which tells us that in order to go from point to point we have to start at one point and go up 1 units and to the right 3 units to get to the next point) the y-intercept is (0,\"-4.66666666666667\") ,or (0,\"-14%2F3\"), and the x-intercept is (\"14\",0) . So all of this information verifies our graph.
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\n" ); document.write( " We could graph this equation another way. Since \"b=-14%2F3\" this tells us that the y-intercept (the point where the graph intersects with the y-axis) is (0,\"-14%2F3\").
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\n" ); document.write( " So we have one point (0,\"-14%2F3\")
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\n" ); document.write( " Now since the slope is \"1%2F3\", this means that in order to go from point to point we can use the slope to do so. So starting at (0,\"-14%2F3\"), we can go up 1 units
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\n" ); document.write( " and to the right 3 units to get to our next point
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\n" ); document.write( " Now draw a line through those points to graph \"y=%281%2F3%29%2Ax-14%2F3\"
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\n" ); document.write( " So this is the graph of \"y=%281%2F3%29%2Ax-14%2F3\" through the points (0,-4.66666666666667) and (3,-3.66666666666667)
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