Question

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

a. Vertical shift down pi units
b. Horizontal shift left pi units
c. Vertical stretch by factor pi
d. Horizontal shift right pi units

Answer 1

y= K +A cos ( Bx + h )

Answer 2

so shift left pi units?

Answer 3

nooooooo to the Right

Answer 4

take x=0

Answer 5

try it on y= -2-cos(x)

Answer 6

then try it on y= -2-cos(x-pi)

Answer 7

you will get for the 1st one : -3

for the 2nd one : -1

Answer 8

so its moving to the RIGHT

Answer 9

@kaykim95 did you get it??