document.write( "Question 205669: Help please. I'm not understanding this problem at all. \r
\n" ); document.write( "\n" ); document.write( "For a particular item the supply equation is given by S= 2p+5. At a price of $1, 19 units of this product are demanded. If the demand equation is linear and the demand is 11 units at a price of $3, find the demand equation. \n" ); document.write( "
Algebra.Com's Answer #155295 by stanbon(75887)\"\" \"About 
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For a particular item the supply equation is given by S= 2p+5. At a price of $1, 19 units of this product are demanded. If the demand equation is linear and the demand is 11 units at a price of $3, find the demand equation.
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\n" ); document.write( "D(p) = mp + b
\n" ); document.write( "m is the slope and is the increase of demand when p increases
\n" ); document.write( "by $1; so m = 19
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\n" ); document.write( "Since demand is 11 when p = $3, and m = 19, you can solve for \"b\":
\n" ); document.write( "11 = 19*3 + b
\n" ); document.write( "b = -46
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\n" ); document.write( "Demand Equation: D(p) = 19p - 46
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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