Across
- 3. method using substitutes to find x,y
- 7. method finding interception on graph
- 9. Large marsu
- 11. equations that have a variable
- 13. Flying mammal
- 15. unequal relation of algebraic expressions
- 17. the way to show equations
- 18. Man's best friend
- 19. Likes to chase mice
Down
- 1. name of straight line
- 2. where two equations meet
- 3. two or more related equations
- 4. unknown numbers represented by symbol
- 5. Has a trunk
- 6. when two equations never intercept
- 8. line a straight line used to graph inequalities
- 10. group of (x,y)'s that are solutions to inequalities
- 12. a variable that is true for both equations
- 14. method by subtracting expressions for x,y
- 16. estimation close to real solutions