system of equations

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Across
  1. 3. replacing a variable in an expression or equation with a specific value or another expression
  2. 5. an equation in 2 variables whose graphs in a coordinate plane is a straight line
  3. 6. pair
  4. 8. the point on a graph where a line or curve crosses the x-axis
  5. 9. a fundamental technique used to visually represent and analyze mathematical relationship
  6. 10. a set of simultaneous equations
Down
  1. 1. the value (or set of values) assigned to variables in an equation that makes the equation true when substitute
  2. 2. the point or points where two geometric objects, like lines or curves, meet or cross each other
  3. 4. the place where a line or curve crosses, or touches, the y-axi
  4. 7. eliminate any one of the variables by using basic arithmetic operations and then simplify the equation to find the value of the other variable