Linear Functions Quiz

1. Solve: 3x + 5 = 14

A) x = 4 B) x = 19/3 C) x = 3 D) x = 9

2. Solve: 2x − 7 = 3x + 1

A) x = 8 B) x = −8 C) x = 6 D) x = −6

3. If A·B = 0, what must be true?

A) A = 0 or B = 0 B) A = 0 and B = 0 C) A = B D) A and B are both negative

4. Solve: (x − 4)(x + 2) = 0

A) x = 4 only B) x = −2 only C) x = −4 or x = 2 D) x = 4 or x = −2

5. Expand: (2x + 3)(x − 5)

A) 2x² − 15 B) 2x² + 7x − 15 C) 2x² − 7x − 15 D) 2x² − 13x − 15

6. Solve: 5x + 2 = 2x − 10

A) x = 4 B) x = −4 C) x = −8/3 D) x = 12/7

7. Solve: (3x − 6)(x + 1) = 0

A) x = 2 or x = −1 B) x = −2 or x = 1 C) x = 6 or x = −1 D) x = 2 or x = 1

8. Which equation is already in the form ax + b = c?

A) (x + 1)(x − 3) = 0 B) x² − 4 = 0 C) (2x − 1)(x + 4) D) 4x − 9 = 7