document.write( "Question 341252: Find the equation of the line for the demand equation. What format do I use to obtain the equation of price of p=$20, which would sell x=42 sneakers each week. If the price were lowered to p=$10, one could expect to sell x=52 of sneakers per week.
\n" ); document.write( "How do I write an equation using 2 points in the form x,p.? \n" ); document.write( "
Algebra.Com's Answer #244336 by stanbon(75887)\"\" \"About 
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Find the equation of the line for the demand equation. What format do I use to obtain the equation of price of p=$20, which would sell x=42 sneakers each week. If the price were lowered to p=$10, one could expect to sell x=52 of sneakers per week.
\n" ); document.write( "How do I write an equation using 2 points in the form x,p.?
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\n" ); document.write( "You have two points: (42,20) and (52,10)
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\n" ); document.write( "slope = (10-20)/(52-42) = -10/10 = -1
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\n" ); document.write( "Use one of the points and the slope to get:
\n" ); document.write( "10 = -1(52)+b
\n" ); document.write( "b = 62
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\n" ); document.write( "Equation:
\n" ); document.write( "price = -(number sold) + 62
\n" ); document.write( "p = -x + 62
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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