The quantity demanded for a certain brand of portable CD players is 200 units when the unit price is set at $90. The quantity demanded is 1200 units when the unit price is $40. Find the demand price equation.

answer should be in the form p=mx+b, round to 2 decimal places if needed

Question

The quantity demanded for a certain brand of portable CD players is 200 units when the unit price is set at $90. The quantity demanded is 1200 units when the unit price is $40. Find the demand price equation. 

answer should be in the form p=mx+b, round to 2 decimal places if needed

anonymous · Answer

Thsi is a question about linear dependence - straight line

anonymous · Answer

The slope m is found as a ratio  Prices-Difference / Quantities-Diffrence

anonymous · Answer

i got the answer

anonymous · Answer

The constant b is found AFTER that by substitution of the m that was found and one specific data (Quantity, Price)

anonymous · Answer

i got p=.05x+100

anonymous · Answer

Let us Reach this answer by doing

anonymous · Answer

Price difference is = (fill the answer pls)

anonymous · Answer

Go on

anonymous · Answer

40 - 90 = -50