What relationship must a, b, and c satisfy such that the linear system correspond to the following augmented matrix is consistent? 1 -4 7 a 3 -5 -2 -9 C Solve the matrix equation 4 Y 4 3 -4 Let a, b, and c be nonzero real numbers. Show, without direct evaluation, that 1 1 1 1 1 1 0. a b. bc ас ab Use Cramer's rule to solve the following linear system in x and y: 3x + 5y + dy р, cx in which c, d, p, and q are fixed constants. I|||

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