MATH 1553 Quiz: MATH 1553 GT 09 01 Quiz b
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[3 points] give an example of a system of two linear equations in two variables that has no solutions. One is x + y = 1 x + y = 2. [1 point each] for each matrix, decide if it is in row echelon form (ref), reduced row echelon form (rref), or neither. The rst and last matrices are not in echelon form. [2 points] give two different ways of making the bottom-right entry of the follow- ing matrix into 1 using a single row operation. One possibility is to replace r3 by 2r1.
