Final answer:
The correct option is a) y(n) = x(n-1) - 0.75y(n-1) - 0.125y(n-2).
Step-by-step explanation:
The given difference equation is.
y(n) = x(n-1) - 0.75y(n-1) - 0.125y(n-2)
By substituting the values of x and y from the equation, you can calculate the system response.
The correct option is a) y(n) = x(n-1) - 0.75y(n-1) - 0.125y(n-2).