FSA Practice Test (8th Grade: Math) 3 — Questions and Answers
Question 1: What is the slope of the line through points (2, 4) and (6, 12)?
- 2 (Correct answer)
- 4
- 8
- 1/2
Correct answer: 2
Slope = (12 - 4)/(6 - 2) = 8/4 = 2.
Question 2: Which of these is a perfect cube?
- 27 (Correct answer)
- 36
- 16
- 9
Correct answer: 27
27 = 3 × 3 × 3, making it a perfect cube.
Question 3: Solve the system: y = x + 1 and y = 2x - 1. What is x?
- 2 (Correct answer)
- 1
- 3
- 0
Correct answer: 2
Setting x + 1 = 2x - 1 gives x = 2.
Question 4: A right triangle has legs of 6 and 8. What is the length of the hypotenuse?
- 10 (Correct answer)
- 14
- 12
- 48
Correct answer: 10
By the Pythagorean theorem, √(6² + 8²) = √100 = 10.
Question 5: What is (2.5 × 10^4) × (2 × 10^3) in scientific notation?
- 5 × 10^7 (Correct answer)
- 5 × 10^12
- 4.5 × 10^7
- 5 × 10^6
Correct answer: 5 × 10^7
Multiply 2.5 × 2 = 5 and add exponents 4 + 3 = 7.
Question 6: A graph that is a straight line through the origin represents what kind of relationship?
- Proportional (Correct answer)
- Quadratic
- Exponential
- Inverse
Correct answer: Proportional
A line through the origin shows a proportional (constant ratio) relationship.
Question 7: Which transformation produces a congruent figure?
- Translation (Correct answer)
- Dilation by 2
- Dilation by 1/2
- Stretching
Correct answer: Translation
Translations preserve size and shape, producing a congruent figure.
FSA Practice Test (8th Grade: Math) 3
What is the slope of the line through points (2, 4) and (6, 12)?