Question

Find the amplitude of y = -4 sin x.

Answer 1

@jim_thompson5910

Answer 2

hint: the amplitude of

y = A*sin(Bx - C) + D

is |A|

Answer 3

what is (Bx - C) + D?

Answer 4

it's part of the general sine equation

Answer 5

B helps determine the period
C helps you figure out the phase shift (along with B)
D shifts the graph up/down

Answer 6

ok, so what would i enter into the calculator?
just -4sin(x) ?

Answer 7

you don't need a calculator for this problem

Answer 8

oh ok

Answer 9

all you need to do is identify the value of A and evaluate |A|

Answer 10

so 4

Answer 11

yes

Answer 12

alright, thanks

Answer 13

yw