Choose the function whose graph is given by:

Step-by-step explanation:

res is A.

Thank goodness. This is the most difficult math problem I've ever done here. Everything else is too easy. What grade are you in?

The correct answer is A. y = 2cos(3x)

Step-by-step explanation:

To find this, first note that it is a cosine wave. We can determine this by the fact that it starts at the amplitude and not 0 (as a sine wave does).

Next, find the amplitude. We can determine this by taking the highest y value and subtracting the lowest y value, then dividing by 2.

2 - -2 = 4/2 = 2

The amplitude is then put in front of the cosine function as such.

y = 2cosx

Next, we find the period. To find the period, determine how long it takes the cycle to repeat (2pi/3). Now divide this by 2pi and take the reciprocal.

(2pi/3)/2pi = 1/3

Reciprocal of 1/3 = 3

We then use this for the coefficient of x along with the other information taht we got.

y = 2cos(3x)

answer: the two figures are congruent.

step-by-step explanation: they're congruent because figure efgh is reflected across the x and y axis but it was also rotated.

hope it !

4400

step-by-step explanation: