<PRE><B>Question 341252</B>
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.
How do I write an equation using 2 points in the form x,p.?
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You have two points: (42,20) and (52,10)
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slope = (10-20)/(52-42) = -10/10 = -1
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Use one of the points and the slope to get:
10 = -1(52)+b
b = 62
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Equation:
price = -(number sold) + 62
p = -x + 62
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Cheers,
Stan H.</PRE>