**Question 7:**

Which graph represents *y* = sin *x* for 0^{o} ≤ *x* ≤ 270^{o}?

*Solution:*

Answer: *B*

**Question 8:**

Which graph represents *y* = sin *x* for 0^{o} ≤ *x* ≤ 180^{o}?

*Solution:*

Answer: *D*

**Question 9:**

Which graph represents part of *y* = sin *x*?

* *

*Solution:*

Answer: *A*