Solving Systems

1234567
Across
  1. 3. when you have opposites
  2. 5. dirty rat
  3. 6. same line
Down
  1. 1. when you plug it in
  2. 2. when you have equations in mx+b
  3. 3. made up of signs, #, letters
  4. 4. parallel
  5. 7. lines cross