Which function has the graph attached inside?

A. y= cos x

B. y= -sin x

C. y= sin(-x)

D. y= -cos x

***not sure, but i think it's either B or C cuz it's moving horizontally and that's a sin kind of graph right?

Question

Which function has the graph attached inside?

A. y= cos x

B. y= -sin x

C. y= sin(-x)

D. y= -cos x

***not sure, but i think it's either B or C cuz it's moving horizontally and that's a sin kind of graph right?

anonymous · Answer

oh wait... but cos goes horizontal too right??? ;/

anonymous · Answer

graph :)

jim_thompson5910 · Answer

when x = 0, y is y = ???

anonymous · Answer

y= -1 ?

jim_thompson5910 · Answer

So which function above gives you y = -1 when you plug in x = 0

anonymous · Answer

not A right? cuz that gives u 0 right?

jim_thompson5910 · Answer

when x = 0, 

y = cos(x)

y = cos(0)

y = 1

anonymous · Answer

ohhh right.. forgot about that!! so if cos=1, then wouldn't -cos be -1??

so would the answer be D. y= -cos x ??

jim_thompson5910 · Answer

yep

anonymous · Answer

whoo hoo!! thanksss :D