Question

Below is the graph of a trigonometric function. It has a minimum point at (-5.4, 1.25) and a maximumpoint at (7.4, 6.75). What is the amplitude

Answer 1

To determine the amplitude we need to see where is the middle line of the function, the middle line passes through the middle value of the y components of the maximum and minimum. Then the middle line passes through;

`(1.25+6.75)/(2)=4`

Now, the amplitude is the vertical distance between the maximum and the middle value, then in this case we have:

`6.75-4=2.75`

Therefore the amplitude is 2.75