y = mx + b where m = slope and b = y intercept
m is given as 4/3 so we can write y = (4/3)x + b
now we find value of b
now the point 0,2/5) is on the line so we plug in these values:-
2/5 = (4/3)*0 + b giving b = 2/5
y = (4/3)x + 2/5
so the answer is b