Which equation represents the graph of y = cos x flipped across the x - axis then shifted vertically down by 2 units

The required equation is  

Step-by-step explanation:

Given : Equation

To find : The equation represents the graph of flipped across the x - axis then shifted vertically down by 2 units.

Solution :

The equation is  

The reflection of the point (x,y) across  the x-axis is the point (x,-y).

f(x,y)→f(x,-y)

Shifted downward means function is shifted by a unit .

f(x)→f(x)-b , function is shifting downwards by b unit.

Therefore, The required equation is