Math Math Algebra and Functions 1 — Questions and Answers
Question 1: Solve for x: 3x + 7 = 22
- x = 5 (Correct answer)
- x = 4
- x = 6
- x = 3
Correct answer: x = 5
3x = 22 − 7 = 15, so x = 15 ÷ 3 = 5.
Question 2: Which of the following is equivalent to 2(x + 3)?
- 2x + 6 (Correct answer)
- 2x + 3
- x + 6
- 2x + 5
Correct answer: 2x + 6
Distribute 2: 2 × x + 2 × 3 = 2x + 6.
Question 3: What is the slope of the line y = 4x − 3?
- 4 (Correct answer)
- -3
- −4
- 3
Correct answer: 4
In slope-intercept form y = mx + b, the slope m = 4.
Question 4: Evaluate f(x) = x² − 2x + 1 when x = 3.
- 4 (Correct answer)
- 2
- 6
- 10
Correct answer: 4
f(3) = 3² − 2(3) + 1 = 9 − 6 + 1 = 4.
Question 5: Solve the inequality: 2x − 5 > 9
- x > 7 (Correct answer)
- x > 2
- x > 4
- x > 14
Correct answer: x > 7
2x > 9 + 5 = 14, so x > 7.
Question 6: Which equation represents a linear function?
- y = 3x + 2 (Correct answer)
- y = x²
- y = √x
- y = 1/x
Correct answer: y = 3x + 2
y = 3x + 2 is linear because the variable x has exponent 1.
Math Math Algebra and Functions 1
Solve for x: 3x + 7 = 22