Please help! Will choose a best answer. Thanks! 22. A linear system of equations

Question

Please help! Will choose a best answer. Thanks!

22. A linear system of equations is plotted below. We created an augmented matrix to represent this linear system, then we performed a series of elementary row operations. Which of the following graphs (a. b. c, or d) could represent the result of these row operations? 23. We have a system of two linear equations and two unknowns which we solve by performing Gaussian elimination on an augmented matrix. Along the way we create the graphs below, showing geometrical representations of the initial system, the system at an intermediate step in the row reduction process, and the system after it has been put into reduced row echelon form. Put these graphs in order, starting with the initial system and ending with the system in reduced row echelon form

Explanation / Answer

a) graph no c becoz ans(intersection point) will remain same after row operations.

b) graph 2 > graph 3 > graph 1

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