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1. |
The domain of a relation is all positive integers less than 4. The range of y or the relation is 2 plus x, where x is a number of the domain. Write the relation as a table of values and as an equation. |
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A. |
None of these. |
B. |
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C. |
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D. |
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Hint |
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2. |
Rewrite the equation 3x + y = 7 in slope-intercept form. |
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A. |
y = -3x + 7 |
B. |
y = 7x + 3 |
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C. |
y = -3x - 7 |
D. |
y = 3x - 7 |
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Hint |
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3. |
Determine whether the graphs of the pair of equations
2x + 3y = 6 and 4x + 6y = 5
are parallel, coinciding, or neither. |
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A. |
all are correct |
B. |
neither |
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C. |
parallel |
D. |
coinciding |
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Hint |
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4. |
Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope. |
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A. |
Mary improved her free throw performance from year-to-year by an average of about 20% |
B. |
Mary improved her free throw performance from year-to-year by an average of about 10%. |
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C. |
Mary improved her free throw performance from year-to-year by an average of about 25%. |
D. |
Mary improved her free throw performance from year-to-year by an average of about 15% |
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Hint |
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5. |
Which is the graph of  ?
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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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6. |
Solve the system of equations y = 0.5x and 4y = x - 2 by graphing. |
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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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7. |
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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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8. |
Find the value of  . |
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A. |
3 |
B. |
17 |
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C. |
-17 |
D. |
-3 |
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Hint |
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9. |
If the lumber mill can turn out 900 units of product each week and must produce 100 units of lumber and 400 units of plywood, graph the systems of inequalities. Let
x = units of lumber, and y = units of plywood. |
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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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10. |
The profit for each unit of lumber is $40 and the profit for each unit of plywood is $60. Write a profit function P(x, y) if x = the number of units of lumber and y = the number of units of plywood. |
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A. |
P(x, y) = 40x + 60y |
B. |
P(x, y) = 60x - 40y |
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C. |
P(x, y) = 40x - 60y |
D. |
P(x, y) = 60x + 40y |
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Hint |
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11. |
Ilene analyzed her test scores and determined the equation of the best-fit line was y = 4.25x + 72. Predict her score for the 5th test. |
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A. |
98.5 |
B. |
93.25 |
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C. |
88.75 |
D. |
72.5 |
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Hint |
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12. |
Graph the data on a scatter plot. |
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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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13. |
What is the value of y when x = 2? |
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A. |
2 |
B. |
undefined |
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C. |
1 |
D. |
0 |
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Hint |
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14. |
Which is the graph of the inequality y > |2x + 1| ? |
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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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15. |
Which of the following describes the system of equations x - 3y + 2 = 0 and
2x - 6y + 4 = 0? |
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A. |
Consistent and dependent |
B. |
Inconsistent |
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C. |
none of these |
D. |
Consistent and independent |
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Hint |
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16. |
Choose the best method to solve the system of equations 4x + y = 6
and 2x - y = 10. |
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A. |
Eliminate y |
B. |
Substitution |
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C. |
Eliminate x |
D. |
Graphing |
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Hint |
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17. |
Solve the system of 3 equations by substitution. x = 3y + 2z
2x + 3y + 2z = 3
-x + y - z = 6 |
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A. |
no solution |
B. |
(1, 3, -4) |
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C. |
infinite solutions |
D. |
(8, 4, -2) |
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Hint |
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18. |
The quadrilateral with vertices A(-1,5), B(2,7), C(4,5) and D(3,3) is reflected over the line y = x . Find the image of the quadrilateral after the reflection. |
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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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19. |
Name the coordinates of the vertices of the polygonal convex set. |
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A. |
(-4,-1), (-4,3), (-2,-4), (4,-2) |
B. |
(-4,-1), (-4,3), (-2,4), (4,-2) |
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C. |
(-4,-1), (-4,6), (-2,4), (4,-2) |
D. |
(-4,-1), (-4,3), (-2,4), (4,2) |
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Hint |
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20. |
Sam has $10,000 to deposit in two different savings accounts. He wants at least $3,000 in the account with 3% interest. He wants no less than $5,000 in the account with 7% interest.Graph this system of inequalities. |
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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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