Question

Find the amplitude of y = -2 sin x.

Answer 1

The amplitude is the absolute value of the a value in the following equation:
y=a sin bx
What is the a value in your equation?

Answer 2

The amplitude? @neonumbrella5115

Answer 3

7.95 ÷ 1.06 = $7.50

This works as by dividing 7.95 by the percentage multiplier 1.06 it will give you the original amount.

An alternative method is to find out what 100% (7.95) is, then divide by 10 to find 10% and then divide by 10 again to find 1% and then multiply the 1% by 6 and subtracting the answer from 7.5

Answer 4

i mean 7.59

Answer 5

do u get it?

Answer 6

What I don't get, boldjon, is why you've posted these responses in someone else's unrelated post. ???

Answer 7

@boldjon No I don't understand your example :/

Answer 8

Yes, the amplitude @tman23

Answer 9

What would the graph of y = -2 sin x look like?

The graph of the sine function begins at (0,0). As x increases, y=sin x increases unti lx=pi/2 and then begins to decrease. What is the max? what is the min?

Now consider y=-2 sin x. The graph also begins at (0,0), but as x increases from x=0, y decreases. What is the min of this function? The max?

Answer 10

The amplitude of the function you're working with is the absolute value of -2: |-2| = ??

Answer 11

@mathmale 2

Answer 12

So that would be your amplitude! :). Good job.

Answer 13

Yes. And welcome to OpenStudy!!

Answer 14

You've successfully "solved" this problem.

Answer 15

Thank you for the explanation @mathmale and @neonumbrella5115 . I understand these problems now :)

Answer 16

No problem! Just remember the form I posted in the first post to solve any other amplitude problems because the absolute value of a is ALWAYS the amplitude.