which transformation causes the described change in the graph of the function y = cos x? the transformation results in a horizon
tal shrink. the transformation results in a vertical stretch. the transformation results in a horizontal stretch. the transformation results in a vertical shrink
The transformations that can occur to the graph of the function y = cos x that will exhibit changes would be changes to the angle, or changes to the coefficient. The transformations can be viewed as follows:
y = cos x transforms to y = cos (kx)
k > 1 ; a horizontal shrink occurs 0 < k < 1 ; a horizontal stretch occurs
y = cos x transforms to y = A cos x
|A| > 1 ; a vertical stretch occurs |A| < 1 ; a vertical shrink occurs
