Curriculum placement
Algebra 1. This describes the skill, not a learner estimate.
Regions defined by inequalities
Graph intersecting half-planes with correct boundary inclusion
Problem types
- Which inequality is graphed?
- Test points against an inequality
Builds on
Leads to
- Systems that model two constraints · See it applied
The overlap of half-plane regions is the set of feasible choices in a constrained model.
- Zeros and factors of a polynomial · Extend the idea
A polynomial inequality is solved by the signs between zeros, as a half-plane is found by testing a point on each side of a line.
- Operations on rational expressions · Extend the idea
A rational inequality is solved by testing signs on each side of the zeros and excluded values.
Related skills
- Average rate of change · Shared foundations
- Comparing functions · Shared foundations
- Proofs that use coordinates · Shared foundations
- Approximating a solution from a graph · Shared foundations
- Linear models of a situation · Shared foundations
Open the interactive map to explore lessons and skill connections.