8.EE.C.8
Analyze and solve pairs of simultaneous linear equations.
Cluster 8.EE.CAnalyze and solve linear equations and pairs of simultaneous linear equations.
Sub-standards
- 8.EE.C.8.aUnderstand that solutions to a system of two linear equations in two variables correspond to points of intersection of their graphs, because points of intersection satisfy both equations simultaneously.
- 8.EE.C.8.bSolve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations. Solve simple cases by inspection. For example, 3x + 2y = 5 and 3x + 2y = 6 have no solution because 3x + 2y cannot simultaneously be 5 and 6.
- 8.EE.C.8.cSolve real-world and mathematical problems leading to two linear equations in two variables. For example, given coordinates for two pairs of points, determine whether the line through the first pair of points intersects the line through the second pair.
Where this sits in the school year
Our Grade 8 Math scope and sequence teaches 8.EE.C.8 in Unit 6: Systems of Equations, weeks 17–19.
Read intersections as simultaneous solutions, solve systems algebraically and graphically, and apply them. See the full pacing guide →
Builds on
Suggested prerequisites. This sequencing is our editorial guidance, not part of the Common Core.
Teaching Kits for this standard
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