Solving Linear Systems in Three Variables Test

Question 1 of 5: Solve each system:

$$-5x - 2y + 7z=7$$ $$-x + y + 5z=-7$$ $$-2y - 5z=12$$

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$$(0, -6, 1)$$

No Solution

Infinitely Many Solutions

$$(-2, 5, -3)$$

$$(1, -6, 0)$$

Question 2 of 5: Solve each system:

$$x + 5y + 7z=-21$$ $$x + 2y + 4z=19$$ $$-3x + 5y - z=-9$$

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Infinitely Many Solutions

$$(0, 0, -3)$$

$$(-3, 5, -7)$$

$$(7, 5, -4)$$

No Solution

Question 3 of 5: Solve each system:

$$3x - y + 4z=-8$$ $$7x + 3y + 5z=-12$$ $$x + 6y + 4z=-26$$

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$$(0,-4,3)$$

No Solution

$$(2, -2, -4)$$

$$(0,-1, 7)$$

Infinitely Many Solutions

Question 4 of 5: Solve each system:

$$-3x - 5y + 5z=4$$ $$-6x + 6y - 3z=-21$$ $$-2x - y + 7z=4$$

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$$(2, -1, 1)$$

Infinitely Many Solutions

$$(-1, -5, -2)$$

$$(2, 1, -1)$$

No Solution

Question 5 of 5: Solve each system:

$$2x - 6y + z=2$$ $$-4x + y - 2z=-4$$ $$-4x - 6y - 2z=-4$$

Finish »

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No Solution

(5, -3, 3)

(3, 3, 4)

Infinitely Many Solutions

(3, -5, -1)

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