Answer -: +ve x direction with frequency 1 Hz and wavelength A = 0.2 m
The sign between two terms in the argument of sine will define its direction.
Writing the given wave equation
y= 0.25 sin (10 Toe- 2t .. (i)
The minus () between (10mx) and (2rt) implies that the waves is travelling along the positive x-direction.
Now comparing eq (i) with standard wave equation
y=asin (kx-wt) ... (i)
we have