document.write( "Question 888907: pls help me to answer with solution ; what is the value of k so that the line x+(3k-2)y+10=0 and is parallel to the line x+5y+2=0
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Algebra.Com's Answer #537746 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
you want to to convert both equation into slope intercept form.\r
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\n" ); document.write( "\n" ); document.write( "slope intercept form is y = mx + b\r
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\n" ); document.write( "\n" ); document.write( "once in this form:\r
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\n" ); document.write( "\n" ); document.write( "m = slope
\n" ); document.write( "b = y-intercept.\r
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\n" ); document.write( "\n" ); document.write( "if the slope of both equation is the same and the y-intercept is different, then the lines are parallel.\r
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\n" ); document.write( "\n" ); document.write( "start with x + 5y + 2 = 0
\n" ); document.write( "subtract x and subtract 2 from both sides of the equation to get:
\n" ); document.write( "5y = -x - 2
\n" ); document.write( "divide both sides of the equation by 5 to get:
\n" ); document.write( "y = -(1/5)*x - (2/5)\r
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\n" ); document.write( "\n" ); document.write( "that's your first equation in slope intercept form.
\n" ); document.write( "the slope is -(1/5).\r
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\n" ); document.write( "\n" ); document.write( "-(1/5) is the slope you want to get in your second equation in order to make the lines parallel to each other.\r
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\n" ); document.write( "\n" ); document.write( "start with your second equation of x + (3k-2)y + 10 = 0
\n" ); document.write( "subtract 10 and subtract x from both sides of the equation to get:
\n" ); document.write( "(3k-2)y = -x - 10
\n" ); document.write( "divide both sides of the equation by (3k-2) to get:
\n" ); document.write( "y = -(1/(3k-2)*x - (10/(3k-2))\r
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\n" ); document.write( "\n" ); document.write( "that's your second equation in slope intercept form.
\n" ); document.write( "the slope is -(1/(3k-2))\r
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\n" ); document.write( "\n" ); document.write( "in order for the lines to be parallel, -(1/(3k-2)) must be equal to -(1/5).\r
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\n" ); document.write( "\n" ); document.write( "set these two expressions equal to each other and solve for k.\r
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\n" ); document.write( "\n" ); document.write( "-1/(3k-2) = -1/5\r
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\n" ); document.write( "\n" ); document.write( "cross multiply to get:\r
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\n" ); document.write( "\n" ); document.write( "-1*5 = -1*(3k-2)\r
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\n" ); document.write( "\n" ); document.write( "divide both sides of this equation by (-1) to get:\r
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\n" ); document.write( "\n" ); document.write( "5 = 3k-2\r
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\n" ); document.write( "\n" ); document.write( "add 2 to both sides of this equation to get:\r
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\n" ); document.write( "\n" ); document.write( "7 = 3k\r
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\n" ); document.write( "\n" ); document.write( "divide both sides of this equation by 3 to get:\r
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\n" ); document.write( "\n" ); document.write( "7/3 = k\r
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\n" ); document.write( "\n" ); document.write( "that's your answer.\r
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\n" ); document.write( "\n" ); document.write( "in order for the lines to be parallel, k has to be equal to 7/3.\r
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\n" ); document.write( "\n" ); document.write( "to confirm, replace k with 7/3 in your original equation.\r
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\n" ); document.write( "\n" ); document.write( "your original equation is x + (3k-2)y + 10 = 0
\n" ); document.write( "replace k with 7/3 to get:
\n" ); document.write( "x + (3*7/3-2)y + 10 = 0
\n" ); document.write( "simplify to get:
\n" ); document.write( "x + 5y + 10 = 0
\n" ); document.write( "subtract x and subtract 10 from both sides of the equation to get:
\n" ); document.write( "5y = -x - 10
\n" ); document.write( "divide both sides of the equation by 5 to get:
\n" ); document.write( "y = -(1/5)*x - (10/5)
\n" ); document.write( "simplify to get:
\n" ); document.write( "y = -(1/5)*x - 2\r
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\n" ); document.write( "\n" ); document.write( "your first equation in slope intercept form is y = -(1/5)*x - (2/5)\r
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\n" ); document.write( "\n" ); document.write( "your second equation in slope intercept form is y = -(1/5)*x - 2\r
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\n" ); document.write( "\n" ); document.write( "the slopes are the same and the y-intercepts are different so the lines are parallel.\r
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\n" ); document.write( "\n" ); document.write( "here's a graph of your two lines.
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