systems of equations

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Across
  1. 5. lines in a plane that never intersect
  2. 6. a symbol or letter representing an unknown quantity
  3. 8. the point where on a graph intersects the x-axis
  4. 10. a numerical or constant factor that is multiplied by a variable in an expression or equation
  5. 11. method used to find the solution to a system of equations by solving one equations for one equation variable and then substituting that expression into the other equations
  6. 13. the system of equations intersect at single point
Down
  1. 1. two lines that intersect that intersect at a right angle
  2. 2. used to solve a system of equations by eliminating one of the variables to obtain a new equation with only one variable
  3. 3. the systems of equations represent identical lines resulting in an unlimited number of solutions
  4. 4. used to solve a system of equations by graphing each equation on the coordinate plane and identifying the points
  5. 7. the point where on a graph intersects the y-axis
  6. 9. the system of equations do not intersect at any point resulting parallel lines
  7. 12. of equations two or more linear equations that are solved simultaneously to find variables that satisfy all the equations in the system