Question

@bibby

Answer 1

Choose the graph of y = \(\dfrac{2}{3}sin \dfrac{1}{2}x\)

Answer 2

http://prntscr.com/555hu9
http://prntscr.com/555hwu

Answer 3

i think it is the last one on the first screenshot

Answer 4

the wavelength is \(-2\pi->2\pi\)
wolfram says the graph looks likes this http://puu.sh/cLKfy.png

Answer 5

that means it is compressed by a factor of 2/3 so it goes from x=-0.67 to 0.67

Answer 6

how are you so good at this???

Answer 7

I'm not lol, I'm just matching. it's like when you were in kindergarten and you saw the red square and the red squares hole and you put the shape in

Answer 8

anyhow I think it'd be the first one in the f irst link

Answer 9

do you want me to post the other 2 here or open a new question?

Answer 10

I don't care about medals

Answer 11

Find the amplitude of y = -2 sin x.
-2π
2π
2 \(\leftarrow\) this one?
\(\dfrac{\pi}{2}\)

Answer 12

if you see question marks after -2 and 2 it is supposed to be pi

Answer 13

i think you can see it if you refresh

Answer 14

i am pretty sure that one is right though