System of Equations Crossword Puzzle

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Across
  1. 11. samelines
  2. 12. if there is at least one solution for a system of equations
  3. 13. if there are no solutions
  4. 14. parallel lines
  5. 15. Ax+By=C
  6. 16. intersecting lines
  7. 17. a statement that two mathematical expressions are equal
Down
  1. 1. y=mx+b
  2. 2. a method for solving a system of linear equations by adding or subtracting the equations to eliminate a variable
  3. 3. point that both lines have in common
  4. 4. a method used for solving a system of equations that replaces one variable in one equation with an expression derived from the other equation
  5. 5. if a system of equations describes two different lines that intersect
  6. 6. for real numbers a,b, and c, if a=b, then a+c=b+c
  7. 7. if both equations describe the same line
  8. 8. the numerical factor of a term that contains a variable
  9. 9. the property that states that the sum of two inverse (opposite) numbers equals a zero
  10. 10. a letter of the alphabet that represents an unknown number in an alebraic expression or equation