Question

To graph y = -cosx, _____.


shift y = cosx left 1 on the x-axis
shift y = cosx up 1 on the y-axis
reflect y = cosx over the x-axis
reflect y = cosx over the y-axis

Answer 1

When you multiply a function by a negative number, it will induce a reflection...but across which axis? :-)

Answer 2

ummm... the x axis!

Answer 3

Good. You had a 50/50 chance there and you got it right. :-)

Answer 4

thanks (: then the answer would be reflect y = cosx over the x-axis
correct?! (:

Answer 5

Indeed. :-)