Question

Amplitude of y=-3sin5x

Answer 1

Amplitude is 3

Explanation:

in y=-3sin5x

the number in front of sign is always the amplitude. Its not negative 3 because the negative simply means it reflects across the x-axis

Answer 2

The amplitude is 3

EXPLANATION

The amplitude of a periodic function is the distance from the midline of its graph to the peak.

The given function is:

`y = - 3 \sin(5x)`

This function is of the form:

`y = a \: \sin(bx)`

The of this function is

`|a|`

By comparing the two functions, we have a=-3.

Therefore the amplitude of the given function is

`| - 3| = 3`