document.write( "Question 94837: i have to a packet of math work for summer as a review to see if we remember how to do what we learned in school and i'm stuck on graphing,\r
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\n" ); document.write( "\n" ); document.write( "y= -3/5x + 4
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Algebra.Com's Answer #69012 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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Solved by pluggable solver: Graphing Linear Equations
In order to graph \"y=%28-3%2F5%29%2Ax%2B4\" we only need to plug in two points to draw the line
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\n" ); document.write( " So lets plug in some points
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\n" ); document.write( " Plug in x=-5
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\n" ); document.write( " \"y=%28-3%2F5%29%2A%28-5%29%2B4\"
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\n" ); document.write( " \"y=15%2F5%2B4\" Multiply
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\n" ); document.write( " \"y=35%2F5\" Add
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\n" ); document.write( " \"y=7\" Reduce
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\n" ); document.write( " So here's one point (-5,7)
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\n" ); document.write( " Now lets find another point
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\n" ); document.write( " Plug in x=0
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\n" ); document.write( " \"y=%28-3%2F5%29%2A%280%29%2B4\"
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\n" ); document.write( " \"y=0%2F5%2B4\" Multiply
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\n" ); document.write( " \"y=20%2F5\" Add
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\n" ); document.write( " \"y=4\" Reduce
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\n" ); document.write( " So here's another point (0,4). 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=%28-3%2F5%29%2Ax%2B4\" through the points (-5,7) and (0,4)
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\n" ); document.write( " So from the graph we can see that the slope is \"-3%2F5\" (which tells us that in order to go from point to point we have to start at one point and go down -3 units and to the right 5 units to get to the next point), the y-intercept is (0,\"4\")and the x-intercept is (\"6.66666666666667\",0) ,or (\"20%2F3\",0)
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\n" ); document.write( " We could graph this equation another way. Since \"b=4\" this tells us that the y-intercept (the point where the graph intersects with the y-axis) is (0,\"4\").
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\n" ); document.write( " So we have one point (0,\"4\")
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\n" ); document.write( " Now since the slope is \"-3%2F5\", this means that in order to go from point to point we can use the slope to do so. So starting at (0,\"4\"), we can go down 3 units
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\n" ); document.write( " and to the right 5 units to get to our next point
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\n" ); document.write( " Now draw a line through those points to graph \"y=%28-3%2F5%29%2Ax%2B4\"
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\n" ); document.write( " So this is the graph of \"y=%28-3%2F5%29%2Ax%2B4\" through the points (0,4) and (5,1)
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