Question

Amplitude of y=-3sin5x

Answer 1

Answer:

Amplitude is 3

Step-by-step 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

ANSWER

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

$| - 3| = 3$