Am i correct? (all questions) if not explain how to get the right answer.

Solve the system of equations. y= 2x y= x^2 - 15

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x