document.write( "Question 290396: a. Suppose a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time. Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. Hint: Write an equation using two points in the form (x,p). \n" ); document.write( "
Algebra.Com's Answer #210120 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
a. Suppose a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time. Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. Hint: Write an equation using two points in the form (x,p).
\n" ); document.write( "(42,20) and (52,10)
\n" ); document.write( "----
\n" ); document.write( "slope = (10-20)/(52-42) = -1
\n" ); document.write( "---
\n" ); document.write( "Form: p = mx+b
\n" ); document.write( "You know m = -1 and y = 20 when x = 42.
\n" ); document.write( "---------------------------------
\n" ); document.write( "20 = -42 + b
\n" ); document.write( "b = 62
\n" ); document.write( "------
\n" ); document.write( "Equation:
\n" ); document.write( "p = -x + 62
\n" ); document.write( "=================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );