document.write( "Question 110672: write the equation of the line with the slope-2 and y-intercept of (0,0) then graph the line. I am really stuck on this and could use some help figuring out how to do this problem. Please help me \n" ); document.write( "
Algebra.Com's Answer #80625 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "If you want to find the equation of line with a given a slope of \"2\" which goes through the point (\"0\",\"0\"), you can simply use the point-slope formula to find the equation:\r
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\n" ); document.write( "\n" ); document.write( "---Point-Slope Formula---
\n" ); document.write( "\"y-y%5B1%5D=m%28x-x%5B1%5D%29\" where \"m\" is the slope, and is the given point\r
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\n" ); document.write( "\n" ); document.write( "So lets use the Point-Slope Formula to find the equation of the line\r
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\n" ); document.write( "\n" ); document.write( "\"y-0=%282%29%28x-0%29\" Plug in \"m=2\", \"x%5B1%5D=0\", and \"y%5B1%5D=0\" (these values are given)\r
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\n" ); document.write( "\n" ); document.write( "\"y-0=2x%2B%282%29%28-0%29\" Distribute \"2\"\r
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\n" ); document.write( "\n" ); document.write( "\"y-0=2x%2B0\" Multiply \"2\" and \"-0\" to get \"0\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=2x%2B0%2B0\" Add 0 to both sides to isolate y\r
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\n" ); document.write( "\n" ); document.write( "\"y=2x%2B0\" Combine like terms \"0\" and \"0\" to get \"0\" \r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the equation of the line with a slope of \"2\" which goes through the point (\"0\",\"0\") is:\r
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\n" ); document.write( "\n" ); document.write( "\"y=2x%2B0\" which is now in \"y=mx%2Bb\" form where the slope is \"m=2\" and the y-intercept is \"b=0\"\r
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\n" ); document.write( "\n" ); document.write( "Notice if we graph the equation \"y=2x%2B0\" and plot the point (\"0\",\"0\"), we get (note: if you need help with graphing, check out this solver)\r
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\n" ); document.write( "\n" ); document.write( " Graph of \"y=2x%2B0\" through the point (\"0\",\"0\")\r
\n" ); document.write( "\n" ); document.write( "and we can see that the point lies on the line. Since we know the equation has a slope of \"2\" and goes through the point (\"0\",\"0\"), this verifies our answer.
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