The relationship between tax rate and income which is relevant to a proportional tax is depicted by? by Sunday | Mar 29 | Economics JAMB | 0 comments A. curve Z and Y B. curve X C. curve Z D. curve Y Correct Answer: Option D = curve Y Users Also Read These:''The rate a reaction is proportional to the number…If the death rate of a country is 52% and the growth…The tax whose rate increase as the level of income…A tax whose rate increases as income increases is?The relationship between the tax rate and income…