What is the y-intercept of the function f(x)=4 - 5x?

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Im literally having a mental breakdown