Given the following state-variable models, obtain the expressions for the matrices A, B, C, and D for

Question:

Given the following state-variable models, obtain the expressions for the matrices A, B, C, and D for the given inputs and outputs.
a. The outputs are x1 and x2; the input is u.
1 = - 5x1 + 3x2
2 = x1 - 4x2 + 5u
b. The output is x1; the inputs are u1 and u2.
1 = -5x1 + 3x2 + 4u1
2 = x1 - 4x2 + 5u2