Question

what is the amplitude for the function y=-1.5sin(4x-3pi)

Answer 1

The function given is,

$y=-1.5\sin (4x-3\Pi)$

The general form of the sine function is,

$y=a\text{ sin}(bx+c)$

Here, a represents the amplitude.

Compare the general form of function with the given function,

The value of amplitude obtained is,

$a=1.5.$

Ignoring the negative sign.

The correct option is D.