Consider the function -2-3cos(x+pi). What effect does the -2 have on the basic graph?

Vertical shift down 2 units

Horizontal shift left 2 units

Vertical stretch by factor 2

Horizontal shift right 2 units

Question

Consider the function -2-3cos(x+pi). What effect does the -2 have on the basic graph? 

        Vertical shift down 2 units

       Horizontal shift left 2 units

       Vertical stretch by factor 2

       Horizontal shift right 2 units

anonymous · Answer

Vertical shift down 2 units. The function can be rewritten as -3cos(x+pi)-2. Addition or subtraction outside of the parenthesis results in a vertical shift.

anonymous · Answer

Okay, thanks. I was really confused