Do not graph a one-step calculation, a definition, or a pure counting item. Desmos is a tool, not a default. Desmos access is in Desmos on the ACT.
If you already know the next line, type it
15% of 80, a 3-4-5 triangle, a mean of four numbers: keypad or head, in mental math before Desmos. Graph when you see both x and y, in if you see x and y.
Checking after you already have an answer is still worth a graph, in checking your work.
The bottom line
Graph to skip algebra. Do not graph to skip arithmetic you already know.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.