Answer with steps please

1. Junkfood Jill spends all of her income on jellybeans and Jolt cola. Suppose that Jill's income is $30, the price of a bag of jellybeans is $6, and the price of a bottle of Jolt cola is $2. If bags of jellybeans are graphed along the vertical axis and bottles of Jolt cola are graphed along the horizontal axis, what is the slope of the budget line?

Select one:

a. 3

b. 1/3

c. -3

d. -1/3