All calculations must be shown to earn for marks. When row reducing matrices, the row operations being performed must be educated. When fractions are involved answers must be given in reduced form. No decimals.

5. Reduce the system below (the variable k will be in your matrix). For what value(s) of k does the system of linear equations below have a unique solution? Explain why there are no values of k such that there will not be a solution. 2x+(4-Dy-6 3x4 (24+Dy-9 [4 Marks] 6. The following reluced matrix represents a system of equations. [3 marks] For what value(s) of x (if any) will the system of equations have: a. A unique solution? b. An infinite number of solutions? c. No solution