What is the equation of the midline for the function y=3cos (x-pi)-4

3 cos((x - π ) - 4 = 3 cos(x) - 4 since cos(x-π) = cos(x)  

-1 ≤ cos(x) ≤ 1  

-3 ≤ 3cos(x) ≤ 3  

-3-4 ≤ 3 cos(x)-4 ≤ 3-4  

-7 ≤ 3 cos(x) ≤ -1  

The range is -7 to -1 so the midpoint is (-7-1)/2 = -4  

y = -4 is the equation of the midline

Step-by-step explanation:

there you go

answer: 12

step-by-step explanation:

because yes

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)