functionA rule that assigns exactly one output to each allowed input.
You’ll leave with these skills
01Evaluate an expression built from two functionsType each function’s equation into Desmos, then type the expression exactly as the question prints it to see the result.
02Graph a model that uses t in place of xType h(t)= in front of the model so Desmos draws its graph.
03Find the lowest point or x-intercepts of a shifted functionType the original function, then type the shifted version exactly as the question writes it and click its lowest point or x-intercepts.
04Spot the function questions that are faster to solve by handWork the answer out on paper when the function’s equation is short or already factored.
This lesson is part of the full library
207 lessons that teach every skill the SAT tests
71Math
40Reading
24Grammar
10 full-length practice tests to build test-day stamina and confidence
A Desmos simulator to solve math questions faster
A step-by-step guide to every practice test question
The Bluebook Simulator, so test day feels familiar
A drawing for every key term, so new ideas make sense at a glance
