The UnlimitedTests Blog
SAT prep tips, strategies, and guides
Deep, hands-on articles on Digital SAT Math, Reading & Writing, study planning, and honest product reviews — written by the team behind UnlimitedTests.
Series
Desmos on the Digital SAT
- 1How to Graph Lines on Desmos (Slope & Intercept in Seconds)
- 2Solve SAT Systems in Seconds: The Desmos Intersection Method
- 3Graphing Circle Equations on Desmos (Center & Radius)
- 4Parabolas on Desmos: Vertex, Roots, and Intercepts
- 5Solve Any SAT Equation Graphically with Desmos
- 6Graphing Inequalities & Shaded Regions on Desmos
- 7SAT Statistics & Regression on Desmos (Straight From a Table)
- 8Desmos Sliders: Cracking 'Find the Value of k' Problems
- 9Desmos Tips, Shortcuts, and When NOT to Use It
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How to Answer Inference Questions on the Digital SAT
The counterintuitive rule behind SAT inference questions: the right answer is the boring one. A walkthrough from real student data, with two worked examples and a printable checklist.
Desmos Tips, Shortcuts, and When NOT to Use It
Every Desmos SAT shortcut worth memorizing — click any point for exact coordinates, keep fractions exact, use tables — and the three times to skip it.
Solve Any SAT Equation Graphically with Desmos
Turn every "solve for x" into "where do they cross?" — graph both sides in the SAT's built-in Desmos and read the answer straight off the screen.
SAT Linear Equation Word Problems: Translate, Solve, Check
A repeatable 3-step system for SAT word problems: translate the sentence into an equation, solve it, and check you answered what was actually asked.
Parabolas on Desmos: Vertex, Roots, and Intercepts
Learn how to find the vertex on Desmos, plus roots and intercepts, by graphing a parabola in Bluebook's built-in calculator and mapping each point to real Digital SAT question wording.
Desmos Sliders: Cracking 'Find the Value of k' Problems
Master Desmos sliders on the Digital SAT: type a letter, drag until the graph fits, and crack "find the value of k" questions fast.
Solve SAT Systems in Seconds: The Desmos Intersection Method
Graph two lines in the Digital SAT's built-in Desmos and the point where they cross solves the whole system — x and y at once. Part 2 of the series.
How to Graph Lines on Desmos (Slope & Intercept in Seconds)
Type y = mx + b into the built-in Digital SAT Desmos calculator and read the slope and intercept straight off the graph. Part 1 of the Desmos series.
Graphing Inequalities & Shaded Regions on Desmos
Type an inequality into the Digital SAT's built-in Desmos and it shades the answer region — then plot the choices to find the point in the overlap.
SAT Statistics & Regression on Desmos (Straight From a Table)
Enter SAT data as a Desmos table, then compute mean, median, and a line of best fit like y = 1.3x - 0.3 to predict values and read the rate of change.
Graphing Circle Equations on Desmos (Center & Radius)
Type any SAT circle equation into Bluebook's Desmos and read the center and radius straight off the graph — origin, shifted, and expanded forms.
SAT Command of Evidence: A Repeatable Method to Answer Them Every Time
Master both textual and quantitative Command of Evidence questions on the Digital SAT with one repeatable, claim-first method — plus worked examples.
How to Solve Systems of Equations on the Digital SAT
Master every system-of-equations setup the Digital SAT loves — substitution, elimination, and when Desmos beats doing the algebra by hand.
Slope-Intercept Form (y = mx + b) on the SAT Made Simple
Master y = mx + b for the Digital SAT: what m and b really mean, how to read them off any equation, and the exact question types they unlock.
Digital SAT Algebra: The Complete Guide to Every Question Type
Master every Digital SAT algebra question type — linear equations, systems, inequalities, and word problems — with worked examples and exact strategies.
How to Improve Your SAT Math Score: A Complete Strategy Guide
A hands-on playbook for raising your SAT Math score fast — from foundational skills to pacing, Desmos, and worked examples.
SAT Reading Tips That Actually Work (From a 750+ Perspective)
Active reading, evidence strategies, and pacing techniques that separate a 600 Reading score from a 750.
SAT vs ACT: Which Test Should You Take?
A side-by-side breakdown of the SAT and ACT — scoring, content, pacing, and how to pick the test that plays to your strengths.
The Best SAT Study Schedule: 1-Month, 3-Month, and 6-Month Plans
Week-by-week SAT study plans for every timeline — with content review, practice tests, and review days built in.
Master SAT Grammar in 30 Days: The Complete Rules Cheatsheet
A day-by-day 30-day plan that covers every grammar rule tested on the Digital SAT — with practice exercises and a rules cheatsheet.
The Digital SAT: What Changed and How to Prepare
A deep look at the Digital SAT adaptive format, new question types, the built-in calculator, and how to shift your prep.
Every SAT Math Formula You Need to Memorize (Organized by Topic)
Algebra, geometry, trigonometry, and statistics formulas every SAT student should know — with when and how to use each.
How to Read Faster for the SAT (Without Losing Accuracy)
Skimming, chunking, and eye-tracking techniques that increase reading speed while keeping comprehension high.
15 Common SAT Mistakes (and Exactly How to Fix Each One)
The 15 most common mistakes students make on the SAT, why they happen, and the exact fix for each.
UnlimitedTests Review: Honest Pros, Cons, and Who It's Best For
A candid review of UnlimitedTests — what it does well, where it falls short, and which students should use it.