Final answer:
Chef Barber's new initial value will change the y-intercept.
Step-by-step explanation:
Given that Chef Walton cooked 50 meals first, and Chef Barber now prepares 14 meals ahead of time instead of 7, we need to determine the effect of this change on Chef Barber's new initial value.
Since Chef Barber prepares 14 meals instead of 7, the new y-intercept will change.
Therefore, the correct answers are options B and D.