Question

4. Plot the following Price and Quantity combinations. Note that the points are given in the format (Quantity, Price).

(0,50),(2,40),(4,30),(6,20),(8,10)


5. Using the equation of a line, what is the algebraic formula of this demand curve?


10 45 Quantity 89 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 4. Plot the following Price and Quantity combinations. Note that the points are given in the format (Quantity, Price) (0, 50), (2, 40), (4, 30), (6, 20), (8, 10) 5. Using the equation of a line, what is the algebraic formula of this demand curve?


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Answer #1

Equation of a line is:

y = mx + b

Q = mP + b

Putting Q = 0 and P = 50 in the equation, we get

0 = 50m + b

b = -50m

Putting Q = 2 and P = 40 in the same equation, we get,

2 = 40m + b

Replacing b = -50m in the above, we get,

2 = 40m - 50m

-10m = 2

m = - 0.2

b = (-50 × -0.2) = 10

Therefore, the demand curve is given by:

Q = -0.2 P + 10

The demand curve is graphed in the figure below:

(2) ฯ0) to

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