You’ll learn how to use the matching strategy (distribute, rewrite in standard form, and match coefficients) to solve problems with infinite solutions or no solutions, and how to interpret these algebraically and graphically. The lesson also shows how to use Desmos sliders to test constants visually—especially useful when equations should represent the same graph—while noting when sliders are not ideal (messy fractions).

The video then covers substitution strategies when constants are tied to given points, tables, or function notation, including exponential functions. You’ll see how to solve constants algebraically, with Desmos tables and regression, or by graphing equations and points to identify which values satisfy the conditions. Finally, it walks through handling intimidating-looking systems by plotting candidate points in Desmos and identifying which ones lie on the equation. Big takeaway: most constant problems reduce to matching terms, substituting points, or leveraging Desmos efficiently instead of grinding algebra.