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1. |
Describe the line that is graphed below. |
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A. |
passes through the point (3,-2) with a slope of  |
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B. |
passes through the point (3,2) with a slope of  |
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C. |
passes through the point (3,-2) with a slope of  |
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D. |
passes through the point (3,-2) with a slope of  |
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Hint |
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2. |
State the number of solutions to the system of equations graphed below. |
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A. |
2 |
B. |
1 |
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C. |
infinitely many |
D. |
0 |
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Hint |
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3. |
When two lines have different slopes, the graphs of the equations are _________ |
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A. |
parallel lines. |
B. |
intersecting lines. |
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C. |
horizontal lines. |
D. |
the same line. |
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Hint |
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4. |
What is the first step in solving the system of equations using the elimination method? 
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A. |
Add the equations. |
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B. |
Multiply the second equation by 2. |
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C. |
Solve the first equation for x. |
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D. |
Subtract the second equation from the first equation. |
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Hint |
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5. |
Solve the system of inequalities by graphing. 
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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6. |
Find the value of 63. |
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A. |
729 |
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B. |
216 |
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C. |
18 |
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D. |
36 |
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Hint |
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7. |
A baker earns 15¢ profit per glazed doughnut g, and 40¢ profit per jelly doughnut j. If a customer wants to buy no more than a dozen doughnuts and wants to try at least one of each kind, what is the maximum profit the baker can earn? |
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A. |
$1.80 |
B. |
$4.80 |
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C. |
$3.30 |
D. |
$4.55 |
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Hint |
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8. |
Choose the slope-intercept form of the equation of the line that passes through (-2, 4) and is perpendicular to the graph of 2x + y = -20. |
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A. |
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B. |
y = -2x |
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C. |
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D. |
y = 2x + 8 |
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Hint |
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9. |
Use substitution to solve the system of equations.
5x + 5y = -30
2x - y = 15 |
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A. |
(21, 27) |
B. |
(3, -9) |
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C. |
no solution |
D. |
infinitely many solutions |
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Hint |
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10. |
Use elimination to solve the system of equations.
-x + 2y = 18
x + 8y = -38 |
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A. |
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B. |
(-22, -2) |
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C. |
(-5, -1) |
D. |
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Hint |
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11. |
Which equation describes the line that contains the points (6, 2) and (12, 4)? |
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A. |
 |
B. |
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C. |
y = 3x |
D. |
y = -3x |
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Hint |
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12. |
A ticket service is selling tickets to a concert. An order of 4 tickets has a price of $63 and an order of 6 tickets has a price of $92. Write an equation to find the price of any amount of tickets. |
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A. |
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B. |
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D. |
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Hint |
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13. |
Write the slope-intercept form of an equation for the line that passes through (-4, -26) and is parallel to  |
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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. |
Graph the line passing through the point (2, -5) with a slope of –2. |
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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 graph represents the following system:  |
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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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16. |
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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17. |
Solve  by the method of determinants. Round to the nearest hundredth. |
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A. |
(1.86, 2.20) |
B. |
(-1.86, -2.20) |
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C. |
(1.68, 4.40) |
D. |
(2.46, 1.20) |
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Hint |
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18. |
Which method of finding solutions would work best to find the solutions to the system  and state why? |
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A. |
substitution |
B. |
adding or subtracting |
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C. |
adding and multiplying |
D. |
determinants and matrices, because there are fewer calculations |
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Hint |
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