Calculating Price Floors and Price Ceilings

[tarekhamam]

if there are any videos explain how these equation come, please share

[Aakash6004]

Was there any video which tell, how these equations come? I have only problem in this equations.

[ooSL33P3Roo]

Where do you get the two formulas from?

QD = 50 - 5p

QS = -10 + 5p

[economicsfun]

@ooSL33P3Roo Good question. These are the equations for the demand and supply curves.

Qd = 50-5p (-5 is the slope) and 50 is the x intercept (when price = 0) and 10 is the y intercept (quantity =0).

Qs=-10+5p, when quantity supplied = 0 (y intercept, where the quantity supplied line crosses the y axis). The slope of the line is +5

Does this help?