Across
- 3. A symbol (usually a letter) that represents an unknown value (like x or y).
- 6. The horizontal line on a graph.
- 7. A number that can be written as a fraction of two integers (like 1/2 or 3/4). Its decimal either ends or repeats.
- 8. A special type of relation where each input (x) has exactly one output (y).
- 9. A mathematical phrase with numbers, variables, and operations, but no equals sign (like 2x + 5).
- 11. A relationship or equation that forms a straight line when graphed (like y = 2x + 1).
- 13. A relationship or equation that does not form a straight line (like y = x²).
- 14. A number that cannot be written as a simple fraction. Its decimal goes on forever without repeating (like π or √2).
- 15. A statement showing that two expressions are not equal, using symbols like <, >, ≤, or ≥.
Down
- 1. A way to represent a part of a whole, written as one number over another (like 3/5).
- 2. The vertical line on a graph.
- 4. A set of ordered pairs (x, y) showing how elements from one set are connected to another.
- 5. A measure of how steep a line is, often written as rise over run (change in y divided by change in x).
- 10. A statement that shows two expressions are equal (like 2x + 3 = 7).
- 12. The set of all possible input values (x-values) for a relation or function.