Question

how to make a demand and supply curve​

Answer 1

Demand :- Demand for a commodity is the desire to buy a commodity backed with sufficient purchasing power and the willingness to spend.
relation between Demand and Price is negative so curve of Demand always make in down side.

Supply :- supply of a commodity refers to a schedule showing various quantities of a commodity that the producers are willing to sell at different possible prices of the commodity at a point of time.
relation between Supply and Price are always in upper side.

y
|. Demand curve
|\
|. \
|. \
|__ \___
0 x


y
l
l. / Supply curve.
l. /
l. /
l/______
0 x

Answer 2

Refer attachment for Supply and Demand curves.

Supply curve is upward line(red) from left to right.

Demand curve is downward line(blue) from left to right .

Extra Information :-

DEMAND -

Demand is the quantity of certain goods which are desired by the consumers from the market.

THE LAW OF DEMAND -

This is a inverse relationship between the prices of goods and it's demand . If the price of the goods rise then their demand will fall . In other words , The higher the price , The lower the quantity demanded . Demand curve is downward line from left to right .

SUPPLY -

Supply is the quantity of certain goods or services which are provided by the desired suppliers to the market.

THE LAW OF SUPPLY -

This is a direct relationship between the prices of goods and it's supply . If the price of the goods rise then their supply will also rise . In other words , The higher the price , The higher the quantity supplied. Supply curve is upward from left to right.