Q1: True or false justify_your answer: (20marks) 1. Consumer willingness and ability are both expressed through his budget. 2. Substituting commodity (X) for commodity (Y) along the indifference curve increase the consumer's utility or satisfaction. 3. It is the same for consumer to consumer at points (1, 2, and 3). 4. The indifference curve is always negatively sloping. 5. If the budget line slope