Plotting a Response of the Following system

How can i plot the response of this system? 𝑦[𝑛] = −𝑦[𝑛 − 1] + 5𝑥[𝑛] + 2𝑥[𝑛 − 3]. From an input 𝑥[𝑛] = [5, 1, 2, 3, 1, 0, 1, 2, −1, ]

Answer 1

[Chunru]

% 𝑦[𝑛] = −𝑦[𝑛 − 1] + 5𝑥[𝑛] + 2𝑥[𝑛 − 3]. 
b = [5 0 0 2];      % 5x(n), 2x(n-3)
a = [1 1];          % y(n) + y(n-1) 
% From an input 𝑥[𝑛] = [5, 1, 2, 3, 1, 0, 1, 2, −1, ]
x = [5, 1, 2, 3, 1, 0, 1, 2, -1];
y = filter(b, a, x);
stem(y)

[John Doe]

Thank you very much for the fast and precise answer. More power to you.