Question

What is the equation of this graph? (4.3)




a. y = cos x


b. y = sin x


c . y = -cos x


d. y = -sin x

Answer 1

 

This graph is symmetric to the x-axis of y = cos (x).

⇒ the equation of this graph is y = -cos x                                                                  

Correct option:  c)   y = -cos x