y = 1/4 x because with the y-intercept being zero you don't have to show the integer 0 in the equation.
Hope you could get an idea from here.
Doubt clarification - use comment section.
We mathematically express the given such that it becomes,
4 / (x - 4) = x / (x - 4) - 4/3
To answer this, multiply the equation by 3(x - 4) since this is the least common multiple (LCM).
4(3) = (3)(x) - 4(x - 4)
Simplifying,
12 = 3x - 4x + 16
4 = -4x
The value of x should be equal to -1.
The calculated value of y can be calculated.
The answer is I believe b=70
