Hello! I need these to be done in an hour since I have midterm in two hours. Please and thank you.

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Question 1 of8 1 Points Which of the following equations is/are linear? (1') 2x + y2 + z = 1 (if) x + By = 22 + 10 (iii) xyy+z+w = 0 O A. none of them Q B. (iii) only 0 c. (i) only 0 D. (i) and (iii) only 0 E. (ii) only Reset Selection Question 2 of 8 1 Points Find the augmented matrix for the following system of linear equations. x1 - 2x2 + X3 = 0 4x1 5x3+ 6 5 = X1 - X2 2 3 O A . 4 -5 0 ua O 0 O B. LON 0 O c. 4 ooo LON O O D. 4 u a o - 1 -2 O E. 4 - O -5 u ac Reset SelectionQuestion 3 of8 1 Points Which of the following matrices is not in row-reduced echelon form? CA. [101 (mi 03. [123 000 [103 012 Reset Selection Question 4 of 8 1 Points Find the row-reduced echelon form of the matrix O N o NO O A . 0 0 O 0 -3 OB 0 0 O O 2 O c. -1 Oo 0 O 0 OD. 0 Oo O 1 O E. 0 1 -1 O 0 O Reset SelectionQuestion 5 of 8 1 Points 1 1 1 1 A system of 3 linear equations in 4 variables has the augmented matrix 1 1 1 2 2 . This system has 2 2 2 3 5 O A. a three-parameter family of solution O B. a unique solution O C. a one-parameter family of solutions O D. a two-parameter family of solutions O E. no solutions Reset SelectionQuestion 6 of 8 1 Points 0 3 2 A system of linear equations in 3 variables has the augmented matrix 0 1 0 4 . This system has 0 0 0 0 O A. the unique solution (2, 4, 0) O B. no solutions O C. infinitely many solutions of the form (2 + 3t, 4, t) O D. infinitely many solutions of the form (2 - 3t, 4, t) O E. infinitely many solutions of the form (2t, 4t, t) Reset Selection