SAT Linear Inequalities: Foundations
A focused Digital SAT Math lesson on linear inequalities with method, worked application, error check, and practice routine.
Purpose of this Digital SAT resource
Linear Inequalities is part of Digital SAT Math. This Foundations resource explains the tested reasoning, a repeatable solution process, a common trap, and a concrete example. The objective is independent transfer: a learner should be able to recognize the skill in new wording and explain why the selected answer follows from the text or mathematics.
Key ideas to understand
- solve and interpret sets of values rather than one value
- use equivalent operations and reverse the inequality when multiplying or dividing by a negative; build the definition and recognize when the skill is being tested.
- Common trap: forgetting to reverse the sign after division by a negative.
- Model example: -2x>8 becomes x8 becomes x
Primary source: satsuite.collegeboard.org
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