What kind of reflection does the trig function y = cos(4x/3 minus 1) have?

To determine the kind of reflection of a trigonometric function, we need to examine the coefficient of the angle within the function. In this case, the given trig function is y = cos(4x/3 - 1).

Let's break down the equation:
1. The coefficient of x within the parentheses is 4/3.
2. This coefficient determines the period of the function, which is given by T = 2π / (coefficient of x).
3. In this case, the period T is 2π / (4/3) = 3π/2.

Since the coefficient of x is positive (4/3), there is no reflection along the x-axis.

Hence, the given trig function y = cos(4x/3 - 1) does not have any reflection along the x-axis.