1. Suppose that there are two goods available to the consumer-pens and pencils. Suppose that the price of a pen is $2.00 while the price of a pencil is $0.50. If we measure the quantity of pens on the horizontal axis and the quantity of pencils on the vertical axis, what is the slope of the budget constraint? Do you need to know the income of the consumer to answer this question? Why or why not?