What is the amplitude of the function?

Question

Below is the graph of a trigonometric function. It intersects its midline at (π, 2.75) and it has a maximum point at 

point at (4/5 ​π, 6.75). What is the amplitude of the function?

(The pi in the second point is on the side of the fraction not with the 5 or 4.)

Answer 1

The amplitude is the vertical distance from the midline to the max: 6.75-6.25 = 4

Answer 2

Need a picture.