System of equations crossword puzzle

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Across
  1. 5. y=8x-3 y=-2x+1
  2. 6. y=3x+4 y=-2x-1
  3. 9. -6x-2y+2z=-8 3x-2y-4z=8 6x-2y-6z=-18
  4. 11. -15x-3y=6 y=-5x-6
  5. 13. whats it called when you shade up
  6. 14. what does this symbol<> mean
  7. 15. how to make decimals into fractions
Down
  1. 1. the graphing for 0 solutions
  2. 2. -x-5y-5z=2 4x-5y+4z=19 x+5y-z=-20
  3. 3. 2.5y=7.5cx-2.5y=23.5
  4. 4. vocab for 0 solutions
  5. 7. intersection
  6. 8. what does this symbol ≤≥ mean
  7. 10. lines graphing for 1 solution
  8. 12. graphing for infinite lines