Determine for what value of' k' the given system x + 2y -z = 1 x + 3y + z = 1 - 4x - 5y + (k²- 9)z = k + 1 Will have i) Unique solution i1) No solution ii1) Infinitely many solutions.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.