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1. |
Use Cramer's rule to find the value of x in the system of equations. 

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Hint |
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2. |
Use substitution to solve the system of equations given below.
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A. |
no solution |
B. |
infinitely many solutions |
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C. |
(-10, -12) |
D. |
(-12, -10) |
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Hint |
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3. |
Use elimination to solve the system of equations. -x + 2y = 18 x + 8y = -38 |
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A. |
(-5, -1) |
B. |
(-22, -2) |
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C. |
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D. |
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Hint |
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4. |
Use elimination to solve the system of equations shown below. 2x - 4y = -5 3x + 4y = -15 |
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Hint |
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5. |
Which system of inequalities is graphed below? |
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Hint |
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6. |
Which system of equations is shown in the graph? |
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A. |
x + 2y = 8 2x - 3y = -2 |
B. |
3x - 2y = 8 x - 3y = -2 |
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C. |
2x + y = 8 y - 3x = -2 |
D. |
x - y = -2 2x + y = 8 |
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Hint |
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7. |
Write the slope-intercept form of an equation for a line perpendicular to the graph of y = -3x + 5 and passes through the x-intercept of that line. |
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Hint |
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8. |
Write the slope-intercept form of an equation for the line that passes through (-4, -26) and is parallel to  |
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Hint |
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9. |
Two sides of an angle are contained in lines whose equations are 6x + 4y = 15 and 7x – 9y = 3. Find the coordinates of the vertex of the angle. Round to the nearest hundredth. |
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A. |
(–1.79, 1.06) |
B. |
(1.79, 1.06) |
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C. |
(–147, –87) |
D. |
(147, 87) |
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Hint |
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10. |
Solve the system of equations given by 5x – 2y = -6 and 15x – 6y = 6. |
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A. |
(-2, -2) |
B. |
no solution |
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C. |
infinitely many solutions |
D. |
(1, 1) |
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Hint |
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11. |
Use substitution to solve the system of equations given by y = 2x and 5x + y = 7. |
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A. |
(-2, -5) |
B. |
(2, 5) |
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C. |
(-1, -2) |
D. |
(1, 2) |
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Hint |
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12. |
Which point is not in the solution set of and  |
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A. |
(5, 0) |
B. |
(-1, -2) |
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C. |
(0, 0) |
D. |
(4, 11) |
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Hint |
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13. |
Using the directed graph, how many different routes are there to get from the Boston plant to the Worcester plant in exactly two transfers? |
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A. |
3 |
B. |
2 |
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C. |
4 |
D. |
1 |
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Hint |
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14. |
Which city has exactly two ways in which supplies can be transferred from other cities? |
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A. |
Lowell |
B. |
Boston |
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C. |
Providence |
D. |
Worcester |
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Hint |
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