A perfectly elastic demand curve is

Which of the following is true for income elasticity of demand?

What is the likely elasticity of supply when the supply curve is a straight line, vertical to the x-axis?

Which of the following is/are constant along a demand curve?

(1) Income of the consumers

(2) Price of related goods

For normal goods, the demand curve has a/an_______ slope.

Which of the following is true as per the law of supply?

(1) There is a negative relation between quantity supplied and price