Why does the function y = loga (1-2x) monotonically increase by 0 on the domain of definition

Why does the function y = loga (1-2x) monotonically increase by 0 on the domain of definition


If 1-2x is a decreasing function and logarithm is taken as an increasing function, then loga (x) must be a decreasing function,
So a must be less than 1 and greater than 0



The function y = loga (1-2x) is monotonically increasing in the domain of definition?


It's too simple, a > 1