Which equation matches the function shown in the graph?
2-
1-
0-
-1-
kla
+K
3/11 27
y= =
555/2
y = 2 cos (x + 1)
2 cos(x + 1)
y = 2 cos(x - 1)
y = 2 cos(x) + 1
3T 4T
7π