System of equations

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Across
  1. 2. A pair of numbers that give the coordinate of a point on a grid in this order: (horizontal x, vertical y)
  2. 3. adding, subtracting, or multiplying a system of equations to help solve a system
  3. 5. Any value for a variable that makes an inequality true
  4. 6. An equation in 2 variables whose graphs in a coordinate plane is a straight line
  5. 7. Graphing 2 or more linear equations to determine the solution to the system
  6. 9. A group of numbers, symbols, and variables that express an operation
  7. 12. One equation is solved for one variable and that solution is substituted in the second equation
  8. 13. In a system of linear equation this means the collinear
Down
  1. 1. Two or more related linear equations
  2. 2. Rules describing the sequence to use in evaluating expressions
  3. 3. A statement that two mathematical expressions are equal
  4. 4. The line is the same, points lie on the same line
  5. 8. In a system of linear equations this means the lines are parallel
  6. 10. The points (x,y) at which both lines that represent a system intersect
  7. 11. Where 2 things meet