Algebra: Digital SAT Math Practice & Diagnostic
Linear equations, linear functions, systems of linear equations, and linear inequalities — the largest Digital SAT Math domain.
This free, focused diagnostic asks adaptive questions on the 5 skills in Algebra and returns a micro-topic Weakness Index — pinpointing the exact concepts costing you points. No sign-up, instant results, worked explanations for every question.
Skills tested in Algebra
Linear equations in one variable
Solving equations with a single variable, including variables on both sides and cases with no or infinitely many solutions.
Linear equations in two variables
Equations of lines, intercepts, and writing equations from points and slopes.
Linear functions
Evaluating linear functions, interpreting slope as a rate of change, and modeling.
Systems of two linear equations
Solving by substitution and elimination; one, none, or infinitely many solutions.
Linear inequalities
One- and two-variable linear inequalities, including sign flips and modeling constraints.
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What your report tells you
Every answer is mapped to one of the skills above and scored by difficulty. Your Weakness Index shows each skill as Strong, Needs Review, or a Critical Gap, with a confidence level so a single lucky or unlucky answer never decides your result. You also get a careless-slip vs concept-gap breakdown and a full explanation for each question.
Other Digital SAT Math domains
Diagnose your Algebra gaps in minutes
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