The graph above shows the height of the tide, in feet, above or…
We are given a graph in which the y-axis displays the height of the tide. We must determine the difference between the heights of the highest and lowest tides.
highest tide = 2.2 feet
lowest tide = -0.5 feet
Thus, the difference between the heights is 2.2 – (-0.5) = 2.2 + 0.5 = 2.7 feet.