Which description matches the transformations y = cosx undergoes to produce y = -3 cos(x) + 1 ?

A. Horizontal compression by factor 3, vertical shift by 1 unit up, then a reflection through the x-axis
B. Vertical stretch by factor 3, reflection through the x-axis, then a vertical shift up 1 unit
C. Reflection through the y-axis, vertical shift of 1 unit, horizontal shift right by 3 units
D. Horizontal shift left 3 units, then vertical shift up by 1 unit

Question

Which description matches the transformations y = cosx undergoes to produce y = -3 cos(x) + 1 ?

A.	Horizontal compression by factor 3, vertical shift by 1 unit up, then a reflection through the x-axis
B.	Vertical stretch by factor 3, reflection through the x-axis, then a vertical shift up 1 unit
C.	Reflection through the y-axis, vertical shift of 1 unit, horizontal shift right by 3 units
D.	Horizontal shift left 3 units, then vertical shift up by 1 unit

anonymous · Answer

Would it be B?