Tides in a specific location can be approximated using the periodic function shown on the graph.
On a coordinate plane, a curve starts at (0, 0.5). It increases to y = 2.4 and then decreases to 0.5. It goes through 2 cycles.
What is the interpretation of the amplitude in this application?
the time between high tides
the time between high tide and low tide
the sum of the heights at high tide and low tide
the difference between the height at high tide and low tide