Consider the simultaneous equationsa) Show that if D ≠ 0, Cramer’s Rule provides the uniqu...

Consider the simultaneous equations

a) Show that if D ≠ 0, Cramer’s Rule provides the unique solution. Interpret geometrically.

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b) Let D = 0, D1 ≠ 0. Show geometrically why there is no solution.

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c) Let D = 0, D1 = 0, D2 = 0. Show geometrically various cases that can arise, some yielding solutions and others yielding no solutions.