The relationship between the tax rate and income which is relevant to progressive tax is shown by? by Sunday | Mar 29 | Economics JAMB | 0 comments A. curve X B. curve Y C. curve Z D. curve X and Z Correct Answer: Option B = curve Y Users Also Read These:A tax system in which the rich pays a higher…The relationship between tax rate and income which…According to the income approach to national income…A tax system in which the income earner pays a fixed…The tax whose rate increase as the level of income…