We have been given that a cosine function is a reflection of its parent function over the x-axis. The amplitude of the function is 11, the vertical shift is 9 units down, and the period of the function is
. The graph of the function does not show a phase shift. We are asked to write the equation of our function.
We know that general form a cosine function is
, where,
A = Amplitude,
= Period,
c = Horizontal shift,
d = Vertical shift.
The equation of parent cosine function is
. Since function is reflected about x-axis, so our function will be
.
Let us find the value of b.




Upon substituting our given values in general cosine function, we will get:

Therefore, our required function would be
.
Answer:i would say translation then dilation and they are similar.
Step-by-step explanation:
Have a nice day:)
1X+8X=90
9X=90
X=10
so one of them is 10 and the other one is 8 times 10 which become 80
Answer:
Its b
Step-by-step explanation:
I did the unit test