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UniGeniusSAT and ACT

SAT Math Desmos practice: which method is fastest?

Can you use Desmos on the SAT? Yes. The digital SAT has the Desmos graphing calculator built in for the whole Math section, and you may also bring an approved calculator.

Question 1 of 10 · Advanced Math

The system of equations below is graphed in the xy-plane. y = 2x² − 3x − 5 y = x + 1 What is the positive x-coordinate of a solution to the system?

Which method is fastest?

SAT Math with Desmos

Choose a method for question 1

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Questions people ask

When is Desmos fastest?

For intersections, counting solutions, vertices and x-intercepts: type the equations and tap the point. For short arithmetic or percent changes, working by hand is usually quicker.

Does Desmos do regression on the SAT?

Yes. Enter the data as a table and type a model such as y₁ ~ ax₁ + b to find the constants.

How we work this out

What it does

Ten SAT-style questions: choose graph, table, regression or by hand, see why it fits, then answer.

Ten original questions across the digital SAT Math domains, for practicing when the built-in Desmos graphing calculator is the fastest route and when working by hand is quicker.

Method

  1. Each question lists four methods. We mark the fastest one or two, with a one-line reason for every option.
  2. Answers are marked exactly; fractions and decimals are both accepted for number answers.
  3. The count shows right answers and how often you chose a fastest method.

Sources

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