21. How would the graph of the linear function y=3x-1 change if the slope remained the same and the y-intercept was changed to 2? *

A. It would move down 3 units on the y-axis, away from the x-axis

B. It would move left 3 units on the x-axis, away from the y-axis

C. It would move up 3 units on the y-axis, crossing over the x-axis

D. It would move right 3 units on the x-axis, crossing over the y-axis

You also have to have an explanation for your answer to get the full 30 points