SAT Math 11: Interpreting Linear Functions

In Section 11, we discuss Interpreting Linear Functions, a very common type of question on the SAT, on which you'll need to determine the meaning or function of a particular number or expression within a linear function. NOTE: All info in this video applies to the DIGITAL SAT, but there are some points to keep in mind. Calculators are now allowed on ALL math questions (a Desmos calculator is built in to the testing app) and the “grid ins” (self-produced response questions) now allow for a wider range of answers (up to 5 digits, negative numbers, etc). Regarding calculator use, we recommend students continue to attempt the “no calculator” questions in our manual without a calculator, but if they feel they must use one, they certainly can. As for the grid-ins, those in our manual abide by the paper test rules, not the DSAT ones. CONTENTS 00:00 - Introduction 01:25 - Example 1 05:44 - 11.1 Types of models 06:23 - SM.118 06:29 - Forms of a linear function 08:38 - 11.2 Rearrange & match-up method 09:39 - Example 2 15:51 - SM.119 15:54 - Note about fractional slopes 17:16 - Question #13 21:14 - y-intercepts 24:35 - SM.120 27:54 - Example 3 31:30 - Example 4 35:32 - SM.121 35:36 - 11.3 Units method 35:54 - Example 5 38:24 - Example 6 41:13 - SM.122 41:19 - 11.4 TIN method 42:31 - Example 7 44:42 - Example 8 47:21 - SM.123 47:42 - Question #29