Question

Which function(s) have this graph? (more than 1)
y = -sin(x)
y = -cos(x - π/2)
y = cos(x + π)
y = sin(x - π/2)
y = -cos(x)
y = sin(x + π)

Answer 1

k so we've got something that looks like this.
alright, so lets analyze the functions we're given