2. For each system of equations below, identify (a) whether the system is linear, bilinear, or nonlinear; (b) the degrees of freedom (DOF); and (c) whether the system is overspecified, underspecified, or square (complete the table directly). 1 2 3 System of Equations 2x1 + x29x3 + 4 = −cos (n) 2x2 = 6²x₂ + 7x1 x₁ - x2 + 7x3 = √5 In x₁ - xa (sin x₂) = 3 cos x₂ + x2x3 = 2 0 L7 4.21 -111 7H-0 15 X₁X2 + X1X3 - 4x1x₂ = 4 X₁ + X₂X3 = x₂ System Type: Linear Bi-Linear Non-Linear Linear Bi-Linear Non-Linear Linear Bi-Linear Non-Linear Linear Bi-Linear Non-Linear DOF: Squareness: Square Underspecified Overspecified Square Underspecified Overspecified Square Underspecified Overspecified Square Underspecified Overspecified

2. Solve the system of linear equation as follows: 2x1 + x2 4.x1 + 5x2 – 3x3 + 6x4 -2x1 + 5x2 – 2x3 + 6x4 4.x1+ 11x2 – 4.x3 + 8x4 x3 + 2x4 %3D 9 4 -

6.) The graph of the system of equations is shown below. What is the solution to the system of equations? 3 2 6 5 4 3-2-1 1 2 3 4 -2 -3 -5- The solution is (-3, -1) because the solution to the system must represent the x- intercepts to both equations. The solution is (1, -3) because the solution to the system must represent the y- intercepts to both equations. The solution is (-2, -1) because the solution to the system must satisfy both equations simultaneously. The solution is (1, 2) because the solution to the system must satisfy one equation or the other.