document.write( "Question 827396: A box of 20 pencils costs $2.00. Discuss the unit rate and plot on a set of axes. \n" ); document.write( "
Algebra.Com's Answer #498665 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "r = 2/20 = $0.10 per pencil
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\n" ); document.write( "y = total cost of pencils
\n" ); document.write( "x = number of pencils
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\n" ); document.write( "linear model for the cost of pencils:
\n" ); document.write( "y = 0.1x
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\n" ); document.write( "graph:
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\n" ); document.write( "\"+graph%28+300%2C+300%2C+-10%2C+10%2C+-1%2C+1%2C+0.1x%29+\"
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
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