1. Vertical Stretch and Compression

2. Vertical stretch and compression
Corresponds to the a value
STRETCH if a>1
COMPRESSION if 0<a<1
Absolute value from the axis of symmetry to the maximum or minimum is the amplitude

3. To determine if stretch or compression
Use y=a sin(x)
Important Note: a negative before a would be a reflection over the x-axis

4. Horizontal Stretch and Compression

5. Horizontal Stretch and Compression
Corresponds to the b value
STRETCH is 0<b<1
COMPRESSION if b>1
Period of a function is found by:
Important note:
A negative before b is a reflection over the y-axis