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?

Answer 1

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

Answer 2

graph :)

Answer 3

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

Answer 4

y= -1 ?

Answer 5

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

Answer 6

not A right? cuz that gives u 0 right?

Answer 7

when x = 0,

y = cos(x)

y = cos(0)

y = 1

Answer 8

ohhh right.. forgot about that!! so if cos=1, then wouldn't -cos be -1??

so would the answer be D. y= -cos x ??

Answer 9

yep

Answer 10

whoo hoo!! thanksss :D