The y intercept is where the graph crosses the vertical y axis. This happens at 4 on the y axis. We can get more specific to say the location is (x,y) = (0,4). Though we could go for the shorter form because all y intercepts occur when x = 0.
Whenever you get questions like these you can turn the percentage into a decimal by adding a point at the beginning of a number then multiply the decimal by the number you need to find a part of
