Question: 1. Explain what Gauss-Jordan elimination, with reference to an example, is. [2m] 2. Use Cramer's rule to solve the following system: x - 4y +

1. Explain what Gauss-Jordan elimination, with reference to an example, is.

1. Explain what Gauss-Jordan elimination, with reference to an example, is. [2m] 2. Use Cramer's rule to solve the following system: x - 4y + z = 4 5x + By - 72 = 10 3x - 2y + z = 16 3. Graph the following system of linear inequalities: 2x - y 2 4 x+y56

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