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How does the built-in Desmos regression feature find unknown coefficients from a table or equation?

Study flashcard from the deck Digital SAT Math: Algebra, Advanced Math & Geometry.

Answer

Use the tilde `~` operator instead of `=` (e.g., $y_1 \sim a x_1^2 + b x_1 + c$). Desmos automatically computes and displays the values of $a$, $b$, and $c$ along with $R^2$.

Explanation

This shortcut is especially powerful for problems with several given data points or graphs where you need to deduce an exact polynomial or exponential model.

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