**Problem : **
The graphs of which pairs of trigonometric
functions can be replaced by its
partner with either a horizontal or a vertical shift?

**Problem : **
What would happen to the sine graph if the equation were changed to this:
*y* = sin(*x*) - 3
?

**Problem : **
What would happen to the cosine graph if the equation were changed to this:
*y* = cos(*x* - )
?

**Problem : **
State a formula for the following graph.

**Problem : **
State a formula for the following graph.