9th Grade Math Quiz
Questions: 16 · 10 minutes
1. A rectangle has an area of 40 square units. Its length is 3 units greater than its width. What are its dimensions?
2 units by 20 units
4 units by 10 units
6 units by 7 units
5 units by 8 units
2. Solve the equation 3x - 7 = 11.
x equals four-thirds
x equals 6
x equals 12
x equals 2
3. For the function f(x) = -2x² + 3, what value results when x = -2?
Positive 11
Negative 5
Negative 1
Positive 5
4. A 10-foot ladder leans against a wall. Its base is 6 feet from the wall, and the ground and wall form a right angle. How high up the wall does the ladder reach?
4 feet
12 feet
8 feet
16 feet
5. A jacket originally costs $80 and is discounted by 15%. What is the sale price before tax?
$65
$72
$68
$75
6. A recreation center charges a $9 registration fee plus $6 per class. You can spend at most $45. If c represents the number of classes, which model and conclusion are correct?
Multiply 9 by c, add 6, and require a total no greater than 45; at most 4 classes
Add 9 to 6c and require a total of at least 45; at least 6 classes
Add 9 to 6c and require a total no greater than 45; at most 6 classes
Add 6 to 9c and require a total no greater than 45; at most 4 classes
7. A bag contains 3 red counters and 2 blue counters. Two counters are selected without replacement. What is the probability that both are blue?
1/5
2/5
1/4
1/10
8. A line has the equation y = -3x + 4. Which statement correctly describes its graph?
It rises 4 units for every 1-unit move to the right and crosses the y-axis at -3
It falls 3 units for every 1-unit move to the right and crosses the y-axis at 4
It rises 3 units for every 1-unit move to the right and crosses the x-axis at 4
It falls 4 units for every 1-unit move to the right and crosses the y-axis at 3
9. Which pair of binomial factors expands to x² - 5x + 6?
The factors x minus 2 and x minus 3
The factors x plus 2 and x plus 3
The factors x minus 1 and x minus 6
The factors x plus 2 and x minus 3
10. At a school performance, two adult tickets and three student tickets cost $39. An adult ticket costs $7 more than a student ticket. How much does one student ticket cost?
$4
$6
$8
$5
11. Two parallel lines are cut by a transversal. The upper-right angle at the first intersection measures 112°. What is the measure of the corresponding upper-right angle at the second intersection?
56°
68°
124°
112°
12. When (3a²b) is multiplied by (2ab³), which description gives the resulting coefficient and exponents?
Coefficient 6, with a raised to the third power and b raised to the fourth power
Coefficient 5, with a raised to the third power and b raised to the fourth power
Coefficient 6, with a squared and b raised to the third power
Coefficient 6, with both a and b raised to the third power
13. An arithmetic sequence begins 5, 9, 13, 17, and continues with the same pattern. What is its 20th term?
76
80
81
85
14. A line passes through the points (2, 3) and (6, 11). What is its slope?
2
4/3
1/2
8
15. The ordered data set is 4, 6, 7, 9, 14. If 30 is added to the set, what is the new median?
7
8
9
10
16. What is the product (6 × 10³)(2 × 10⁻²), written as an ordinary number?
120
12
1,200
12,000