Across
- 2. branch of math that involves expressions with variables
- 5. lines that lie in the same plane but never intersect
- 6. a number, letter, or symbol whose value is fixed
- 7. named after Rene Descartes, it is divided into four regions called quadrants
- 9. lines that form a 90-degree angle when they intersect
Down
- 1. any ordered pair that satisfies either of the equations is a solution
- 3. a letter used as a factor
- 4. a pair of elements
- 8. point where the axes x and y intercept
- 10. set of all the second coordinates