Two step Equations

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Across
  1. 2. straight-line line graphs to represent the relationship between two quantities
  2. 3. when a negative and a positive cancel each other out
  3. 6. a letter replacing the answer
  4. 10. either a single number or variable or numbers and variables multiplied together
  5. 12. pairs of mathematical manipulations in which one operation undoes the action of the other
Down
  1. 1. finding the value of something
  2. 4. uses alphabetical letters to find unknown numbers
  3. 5. a number that is multiplied by the variable
  4. 7. expression using the = sign
  5. 8. of any mathematical statement that consists of numbers
  6. 9. a value that doesn't change
  7. 11. Pictitoral representation