$y=\sin\left(-2x\right)$

$y=\cos\left(-x\right)$

$y=-\cos2x$

$y=-\sin x$

$y=2\cos3x$

$y=3\sin2x-1$

$y=2\sin x-2$

$y=3\cos x+1$

Graph is shifted downwards by 1 unit.

Graph is stretched by a factor of 2, parallel to the y-axis, and shifted upwards by 1 unit. 

Graph is shifted upwards by 1 unit.

Graph is stretched by a factor of 2, parallel to the y-axis. 

Graph is stretched by a factor of 3, parallel to the y-axis and by a factor of  $\frac{1}{4}$ , parallel to the x-axis.

Graph is stretched by a factor of  $3$  , parallel to the y-axis and by a factor of  $\frac{1}{2}$  , parallel to the x-axis.

Graph is stretched by a factor of 3, parallel to the y-axis and by a factor of 2 parallel to the x-axis.

Graph is stretched by a factor of  $\frac{1}{2}$  , parallel to the y-axis and by a factor of 3, parallel to the x-axis. 

Graph is reflected in the x-axis. 

Graph is shifted to the left by  $90\degree$  

Graph is shifted to the left by  $45\degree$  

Graph is shifted to the right by  $90\degree$