What does the y-intercept (0,3) mean in context?

When 0 units are sold, the revenue 3 million

When 3 units are sold, the revenue is 0 million

The y-intercept of (0,3) in this context means that when no units are sold, the revenue is at 3 million. This implies that even without any sales, there is still a fixed revenue or income of 3 million.