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Solve the system of linear equations using matrices

Question : Solve the system of linear equations using matrices : 2151595

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Solve the system of linear equations using matrices.

1) (x + y = - 4)(x - y = 2)

A) (- 1, 3)

B) ∅

C) (- 1, - 3)

D) (- 3, - 1)

2) (- x + y = 2)(-3x + y = 8)

A) (3, 1)

B) ∅

C) (- 1, - 3)

D) (- 3, - 1)

3) (2x + y = - 2)(3x + y = - 1)

A) (- 4, 1)

B) (1, - 4)

C) ∅

D) (- 1, 4)

4) (x + 2y = - 2)(x + 3y = - 1)

A) (- 4, 1)

B) ∅

C) (1, - 4)

D) (- 1, 4)

5) (4x + 2y = - 2)(6x + 3y = - 3)

A) (5, - 3)

B) ∅

C) (- 3, 5)

D) (- 3, - 5)

6) (6x + 2y = - 14)(5x = - 20)

A) ∅

B) (- 4, - 5)

C) (5, - 4)

D) (- 4, 5)

7) (6x + y = 27)(5x + 4y = 13)

A) ∅

B) (- 3, 5)

C) (5, - 3)

D) (- 3, - 5)

8) (3x - 6y = 6)(6x - 12y = - 7)

A) (6, - 7)

B) {(x,y)|3x - 6y = 6}

C) (2, 2)

D) ∅

9) (4x + y = 23)(4x + y = 39)

A) (16, 7)

B) {(x, y)|4x + y = 23}

C) (12, 19)

D) ∅

10) (4x + y = 15)(12x + 3y = 45)

A) {(x, y)|4x + y = 15}

B) (0, 15)

C) ∅

D) (5, - 5)

11) (x + 4y + 4z = 4)(2y + 5z = - 15)(2z = - 10)

A) (4, - 5, 5)

B) (4, 5, - 5)

C) ∅

D) {(x, y, z)|x + 4y + 4z = 4}

12) (6x - y - 5z = 2)(- 9x + 7z = - 13)(4y + z = 26)

A) (3, 6, 2)

B) ∅

C) (3, 2, 6)

D) (- 3, 6, 6)

13) (8x - 8y - z = - 9)(x - 5y + 8z = 68)(- 7x + y + z = 3)

A) (- 1, 1, 2)

B) (1, 9, 1)

C) (1, 1, 9)

D) ∅

14) (4x - y - 9z = - 61)(8x + 8y + 8z = 120)(7x - 7y + z = - 21)

A) (2, 6, 7)

B) (- 2, 6, 4)

C) (2, 7, 6)

D) ∅

15) (- 4x - 6y + 2z = - 24)(16x + 24y - 8z = 96)(- 12x - 18y + 6z = - 72)

A) ∅

B) {(x, y, z)|- 4x - 6y + 2z = - 24}

C) {(x, y, z)|- 12x - 18y + 6z = - 24}

D) (4, 4, 8)

16) (- 4x - 2y - 2z = - 3)(- 6x + 5y + 8z = - 1)(- 12x - 6y - 6z = 3)

A) ∅

B) (- 3, - 1, 3)

C) {(x, y, z)|- 4x - 2y - 2z = - 6}

D) (3, 3, - 1)

Solution
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Algebra 4 Months Ago 25 Views
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