A group of workers are picking grapes at a constant rate. An equation that represents the number of baskets of grapes the workers picked over a period of time, in hours, is y = 4x + 3. (a) What are the slope and the y-intercept for the equation that represents the number of baskets of grapes the workers picked over a period of time?

(b) What is the rate of change and the initial amount? Explain the meaning of the rate of change and the initial amount for the situation.

(c) Use graph paper to draw a graph representing the situation. Label the axes appropriately.