# math

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Suppose that a market research company finds that at a price of p=\$25, they would sell x= 53 tiles each month. If they lower the price to p=\$15, then more people will purchase the tile, and they can expect to sell x = 63 tiles monthâ€™s time. Find the equation of the line for the demand equation. Write the answer in the form p=mx+b

• math -

Solve these two simultaneous equations for m and b:

25 = 53 m + b
15 = 63 m + b

10 = -10 m
m = -1
15 = -63 + b
b = 78

p = -x + 78

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