SAT linear functions guide Linear functions form the absolute backbone of the Digital SAT Math section. Accounting for roughly 35% of the total Math assessment under the Algebra content domain, linear concepts appear across 13 to 15 questions per test. Whether you are interpreting a real-world word problem, finding a slope from a table of values, or analyzing a line plotted on the coordinate plane, mastering these concepts is essential for scoring in the top percentile. Wit