Linear equations and inequalities

12345678910111213
Across
  1. 3. the region showing all possible solutions
  2. 4. method using inverses with variables to find a solution
  3. 5. sentence using an equal sign
  4. 7. (x,y) that satisfies both functions
  5. 11. adding opposites to create smaller expression
  6. 13. points on a dotted line
Down
  1. 1. drawing and connecting all points of a function
  2. 2. point where y=0
  3. 3. replacing a variable with another expression
  4. 6. two or more functions with common solution
  5. 8. points on a solid line
  6. 9. sentence using < or >
  7. 10. point where x=0
  8. 12. rate of change