SAT problems involving linear equations in slope-intercept form are common, and Desmos excels at supporting the solving of such problems due to the ease with which linear equations can be graphed.

Answer: D

Here's another example that uses a technique mentioned earlier, regression, that can really speed up solving for many types of problems. Using regression, Desmos will find unknown values in an equation, such as the slope and y-intercept of a line given two points, allowing you to find any other points that lie on the line. Don't worry if this is a little confusing right now; we'll explain this method fully (and show you how it can be employed even more compactly) later on:

Answer: 26