Systems of Equations Flashcards
Grade 9 · Math · Flashcards
Master key vocabulary for solving systems of linear equations in Grade 9 Math.
Flashcards
- System of equations
- Two or more equations with the same variables solved together
- Solution of a system
- An ordered pair (x, y) satisfying all equations in the system
- Substitution method
- Isolate one variable in one equation and substitute into the other
- Elimination method
- Add or subtract equations (after multiplying if needed) to cancel one variable
- Graphing method
- Plot both lines; the intersection point is the solution
- Consistent system
- A system that has at least one solution
- Inconsistent system
- No solution — the lines are parallel and never meet
- Dependent system
- Infinitely many solutions — the equations describe the same line
- Ordered pair
- A pair of values (x, y) representing a point on the coordinate plane
- Parallel lines
- Lines with the same slope but different y-intercepts; they never intersect
- Point of intersection
- The single (x, y) coordinate where two lines cross
- Coefficient matching
- Multiplying equations so one variable's coefficients are equal before eliminating
Get a personalized course on Systems of Equations built around your child.