IBEW Algebra and Functions 2

Question 1

Solve for x: 7x + 3 = 4x + 18

Accepted Answer

x = 5

Answer

7x - 4x = 18 - 3 → 3x = 15 → x = 5.

Question 2

What is the slope of the line passing through points (2, 5) and (6, 13)?

Accepted Answer

2

Answer

Slope = (13-5)/(6-2) = 8/4 = 2.

Question 3

Solve the quadratic: x² - 7x + 10 = 0

Accepted Answer

x = 2 or x = 5

Answer

Factor: (x-2)(x-5) = 0 → x = 2 or x = 5.

Question 4

If f(x) = 2x² - 3x + 1, find f(-1).

Accepted Answer

6

Answer

f(-1) = 2(-1)² - 3(-1) + 1 = 2 + 3 + 1 = 6.

Question 5

Solve the inequality: 3 - 2x ≤ 9

Accepted Answer

x ≥ -3

Answer

-2x ≤ 6 → x ≥ -3 (flip inequality when dividing by negative).

IBEW - Aptitude Test Practice Test