$\"\"$

The general form of the graph of sine function is $\"\"$ .

The given function is sine, and its period is $\"\"$ and amplitude is $\"\"$ .

The left phase shift of $\"\"$ is $\"\"$ .

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Multiply each side by $\"\"$ ) $\"\"$

$\"\"$ (Write original function)

$\"\"$ (Substitute $\"\"$ ).

The function $\"\"$ is a vertical translation down 1 unit.

So, the function is $\"\"$ . $\"\"$

The function is $\"\"$ .