Question

Find the amplitude of y = -2 sin x

Answer 1

Your expression: y = -2 sin x
General expression: y = a*sin x

You can see for yourself that your a is equal to -2.

The "amplitude" that you want is the absolute value of a, or |a|, or |-2| = ?

Answer 2

so is it 2?

Answer 3

@mathmale

Answer 4

Nice work. Yes, your AMPLITUDE is 2, even though you have -2 in front of the sine function.

Answer 5

ok thanks!