The only SAT Math DESMOS Guide you'll ever need

This paragraph introduces the Desmos calculator as an essential tool for the SAT, emphasizing its speed and accuracy. The speaker criticizes Khan Academy for not utilizing Desmos effectively and promises to demonstrate Desmos' capabilities in solving various SAT math problems. The paragraph covers single-variable equations, systems of equations, and the importance of understanding solutions in different contexts. It also humorously addresses the limitations of Desmos on the SAT, such as the inability to upload images or play sounds.

The speaker explains how to use Desmos for solving systems of equations and inequalities, highlighting the visual representation of solutions as points of intersection or overlapping regions. The paragraph discusses the concept of rewriting single-variable equations as systems and vice versa, and the importance of understanding the context of the problem to avoid incorrect solutions. It also touches on the practical application of Desmos for solving real-world problems, such as budget constraints in purchasing fruits.

This paragraph delves into the use of Desmos for analyzing quadratic functions and their graphs. The speaker demonstrates how to find x and y intercepts, vertices, and the minimum or maximum values of quadratics using Desmos. It also addresses the importance of understanding transformations of quadratics and how Desmos can simplify the process of finding the minimum value when the function is translated vertically. The paragraph concludes with a strategy for solving problems involving the intersection of a quadratic and a horizontal line, emphasizing the efficiency of using Desmos over manual calculations.

The speaker discusses the use of Desmos for solving statistical problems, such as calculating mean and median directly from a dataset. The paragraph also provides cautionary advice on when not to use Desmos, such as for linear systems of equations with no solution, where paper and pencil are preferred for precision. It concludes with a humorous anecdote about the speaker's personal experience with a green t-shirt used as a failed green screen, serving as a light-hearted reminder that not all attempts at using tools will be successful.

The final paragraph summarizes the situations where Desmos should be used for SAT math problems, including single-variable equations, systems of equations, systems of inequalities, finding intercepts and vertices of quadratics, and computing mean and median directly. It also advises against using Desmos for problems that require a strong understanding of algebra and arithmetic, such as equivalent expressions or finding the center and radius of a circle. The speaker emphasizes the importance of practice and understanding of concepts for effective test preparation.