Intersect Prep

Built for the digital SAT

Solve SAT math faster with Desmos

The digital SAT gives you a Desmos graphing calculator on every math question. Learn the moves that turn hard questions into quick ones, then level up with practice that feels like a game.

Easy
y=3x−7y = 3x - 7y=−x+5y = -x + 5

The solution to the system is (x,y)(x, y). What is x+yx + y?

5 · Nailed it!

Desmos move: graph both lines and click where they cross.

(3, 2)
practice problems
306
practice problems
Desmos techniques
9
Desmos techniques
SAT math topics
4
SAT math topics
questions in a full timed module
22
questions in a full timed module

Your path to test day

Always know what to do next

  1. Step 1Learn the movesShort lessons on the Desmos techniques that crack SAT math, each with a live example.
  2. Step 2PracticeSAT-style problems beside the same calculator you'll use on test day, with a strategy for each.
  3. Step 3Beat the clockTimed sets at real SAT pace, up to a full 22-question module.
  4. Step 4Fix your missesEvery mistake is saved for review, with the technique that solves it.

Practice that feels like progress

Earn XP. Keep your streak. Unlock achievements.

Every problem you solve on your own and every timed set moves you forward. Hints cost half the XP, so your level reflects what you can really do.

  • Instant feedback with a strategy when you miss
  • Daily streaks that reward showing up
  • 12 achievements to collect

Level 4

Solver

5 days

340 XP · 160 XP to level 5

  • First solve
  • On a roll
  • Sharpshooter
  • Full module

9 Desmos moves that do the heavy lifting

Most SAT math questions fall to a handful of Desmos techniques. Each one has a live example and practice problems that use it.

  1. 01Graph both sides and intersectFree sample
  2. 02Click the gray points: zeros and vertices
  3. 03Use a slider for an unknown constant
  4. 04Fit data with a regression
  5. 05Define functions and evaluate them
  6. 06Lists and statistics functions
  7. 07Plot the answer choices
  8. 08Graph equations exactly as written
  9. 09Quick calculations and built-in functions

See it in action

Solve it side by side

Every problem sits next to the same Desmos calculator you'll use on the digital SAT.

Load the strategy in one click

Stuck? Open the Desmos strategy and load the exact setup into the calculator to see how it works.

Pick up where you left off

See what you've solved in each topic and jump straight to your next unsolved problem.

Every SAT math topic

306 practice problems, from easy to hard, each with a Desmos strategy and a full explanation.

Algebra

89 problems

  • Systems of linear equations
  • Linear inequalities
  • Linear equations in two variables
  • Linear functions
  • Linear equations in one variable

Advanced Math

91 problems

  • Nonlinear functions
  • Exponential functions
  • Equivalent expressions
  • Nonlinear equations
  • Systems of nonlinear equations

Problem-Solving and Data Analysis

63 problems

  • One-variable data
  • Percentages
  • Ratios, rates, and proportions
  • Probability
  • Two-variable data
  • Inference from sample statistics and margin of error
  • Evaluating statistical claims

Geometry and Trigonometry

63 problems

  • Circles
  • Right triangles and trigonometry
  • Lines, angles, and triangles
  • Area and volume

Ready to make Desmos your secret weapon?

Start with the first technique: a short read and a live example.