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1. |
Which ordered pairs could be used to graph the equation 2x + y = 5? |
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A. |
(5, 0), (1, 2) |
B. |
(-2, 9), (4, -3) |
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C. |
(2, 5), (-1, 5) |
D. |
(2, -1), (-1, 2) |
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Hint |
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2. |
Draw the graph of y = -3x + 4. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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3. |
Which expression is used to find the slope of a line? |
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A. |
m =  |
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B. |
m =  |
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C. |
m =  |
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D. |
m =  |
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Hint |
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4. |
What is the slope of the line through the points A(-3, 4) and B(2, -1)? |
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A. |
-1 |
B. |
1 |
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C. |
-3 |
D. |
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Hint |
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5. |
Find the solution of the system of equations y = x + 6 and . |
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A. |
(-8, -2) |
B. |
(-16, -10) |
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C. |
(8, 14) |
D. |
(4, 10) |
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Hint |
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6. |
Which ordered pair is not a solution of the inequality ? |
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A. |
(-3, -9) |
B. |
(4, -10) |
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C. |
(0, 8) |
D. |
(-6, -10) |
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Hint |
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7. |
Which relation is not a function? |
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A. |
{10, 0), (2, 4), (-2, 4)} |
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B. |
{(2, 4), (3, 5), (2, 7)} |
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C. |
{(1, 1), (2,2), (3, 3)} |
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D. |
{(-2, 1), (2, 3), (6, 5)} |
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Hint |
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8. |
Which of the following is (are) true about functions? |
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A. |
Functions are relations. |
B. |
Functions pass the vertical line test. |
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C. |
In a function, each member of the domain is paired with one and only one member of the range. |
D. |
All of these |
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Hint |
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9. |
Find the y- intercept for the graph of 4x – 2y = 16. |
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A. |
8 |
B. |
-8 |
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C. |
-4 |
D. |
4 |
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Hint |
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10. |
Find the x- intercept of 4x – 6y = 24. |
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A. |
-4 |
B. |
4 |
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C. |
6 |
D. |
-6 |
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Hint |
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11. |
Suppose y varies directly with x and y = -10 when x = 5. Write an equation relating x and y. |
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A. |
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B. |
y = -2x |
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C. |
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D. |
y = 2x |
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Hint |
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12. |
The direct variation equationy = .1x gives the price y for x minutes of a long distance calling plan. Use the equation to find the cost for a phone call that is 32.5 minutes long. |
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A. |
$3.25 |
B. |
$3.20 |
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C. |
$3.28 |
D. |
$3.30 |
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Hint |
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13. |
State the slope and y- intercept of the graph of 10x - 13y = 36. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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14. |
Which of the following is the equation of the given graph? |
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A. |
y = 5x + 2 |
B. |
y = -5x + 2 |
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C. |
y = -5x – 2 |
D. |
y = 5x – 2 |
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Hint |
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15. |
Use the table of values to write an equation in slope-intercept form. |
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A. |
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B. |
y = 3x + 11 |
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C. |
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D. |
y = -3x – 31 |
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Hint |
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16. |
Use the table of values to write an equation in slope-intercept form. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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17. |
A scatter plot contains the points (2, 8) and (19, 59). Write an equation in slope-intercept form for the best-fit line of the scatter plot. |
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A. |
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B. |
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C. |
y = 3x + 2 |
D. |
y = -3x + 15 |
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Hint |
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18. |
A best-fit line has the equation y = 13.7694x + 3.99, which models the cost y of ordering x CDs from a music company. Predict the cost of ordering 8 CDs. |
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A. |
about $114.06 |
B. |
about $100.30 |
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C. |
about $110.16 |
D. |
about $114.15 |
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Hint |
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19. |
Solve the system of equations given by y = -2x and y = x + 3. |
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A. |
(-1, 2) |
B. |
(3, 6) |
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C. |
(-3, -6) |
D. |
(1, -2) |
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Hint |
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20. |
Match the graph shown with the correct inequality. |
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A. |
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B. |
y < -4x – 6 |
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C. |
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D. |
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Hint |
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