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:Which of the following policies qualifies the holder…The tax whose rate increase as the level of income…A form of tax that is mildly progressive and regressive is?If a country's national income increased from N1000…The distance between two points in phase on a…