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1. |
Find the slope-intercept form of an equation of the line that has a slope of  and passes through (8,2). |
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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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2. |
State the number of solutions to the system of equations graphed below. |
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A. |
0 |
B. |
infinitely many |
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C. |
2 |
D. |
1 |
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Hint |
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3. |
The system of equations on the graph shown is |
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A. |
inconsistent. |
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B. |
consistent. |
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C. |
consistent and independent. |
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D. |
consistent and dependent. |
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Hint |
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4. |
Solve the system of equations. 
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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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5. |
What is the solution of the system of inequalities? 
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A. |
region 2 |
B. |
region 3 |
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C. |
region 4 |
D. |
region 1 |
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Hint |
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6. |
Which coordinates are not of the vertices of the feasible region for the system of inequalities? 
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A. |
(0, 6) |
B. |
(5, 1) |
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C. |
(2, 4) |
D. |
(5, 4) |
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Hint |
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7. |
Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write the function that describes the cost of the quilt. |
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A. |
f(b, w) = 4b + 7w |
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B. |
96 = 0.80b + 1.20w |
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C. |
f(b, w) = 0.80b + 1.20w |
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D. |
96 = 4b + 7w |
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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. |
y = -2x |
B. |
y = 2x + 8 |
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C. |
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D. |
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Hint |
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9. |
Use substitution to solve the system of equations given below.
y = 2x
5x - y = -24 |
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A. |
(-4, -8) |
B. |
infinitely many solutions |
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C. |
no solution |
D. |
(-8, -16) |
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Hint |
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10. |
Use substitution to solve the system of equations.
5x + 5y = -30
2x - y = 15 |
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A. |
no solution |
B. |
infinitely many solutions |
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C. |
(3, -9) |
D. |
(21, 27) |
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Hint |
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11. |
Which graph is the graph of the system of inequalities?
y > 2x
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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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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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C. |
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D. |
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Hint |
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13. |
Line segment  has endpoints A(-6, -3) and B(2, 1). Line segment  has endpoints C(-4, 8) and D(3, -6). Is perpendicular to ? Why? |
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A. |
No, the lines are parallel. |
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B. |
Yes, the slopes are negative reciprocals. |
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C. |
No, the lines intersect but not at right angles. |
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D. |
Yes, the slopes are opposites. |
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Hint |
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14. |
Find the slope of the line below. |
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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. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
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A. |
$50 |
B. |
$25 |
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C. |
$217 |
D. |
$70 |
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Hint |
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16. |
Solve the system of equations 3x – 5y = 4
–2x + 4y = 3. |
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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. |
Solve  for x by the method of determinants. |
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A. |
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B. |
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C. |
11 |
D. |
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Hint |
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18. |
Two sides of an angle are contained in lines whose equations are  and  Find the coordinates of the vertex of the angle. Round to the nearest hundredth. |
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A. |
(1.89, 3.26) |
B. |
(1.78, -1.16) |
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C. |
(2.76, 3.16) |
D. |
(1.79, 1.06) |
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Hint |
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