Pass Check: Algebra

Letters stand for unknown or variable numbers in maths.

4 definitions3 to memorise3 common mistakes5 exam questions8-question quiz

Variable

A letter representing a number that can change, e.g. x.

Constant

A fixed number with no letter, e.g. 7 in 3x + 7.

Coefficient

The number multiplying a variable, e.g. 5 in 5x.

Term

A single part of an expression, e.g. 3x, 4y or 6, separated by + or -.

Quick check

Mixed quiz

1. Solve x² − 3x + 2 = 0.

2. Solve 7x + 7 = 42.

3. Solve 4x + 7 = 23.

4. Solve x² − 12x + 32 = 0.

5. Solve 4(x + 1) = 24.

6. Solve x² − 5x + 6 = 0.

7. Solve 6(x + 3) = 30.

8. Solve 8x + 4 = 68.