Vertical Stretch and Compression

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Presentation transcript:

Vertical Stretch and Compression

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

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

Horizontal Stretch and Compression

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