point of intersectionA point shared by two graphs, whether they cross, touch, or overlap there. Its coordinates, the numbers locating it, make both equations true at the same time.
You’ll leave with these skills
01Enter a long decimal answer so it gets creditFill all five spaces of the answer box with the decimal Desmos shows, cut off or rounded at the last space.
02Enter a negative decimal answer without losing a digit to the minus signA negative answer can use six characters, including the minus sign. Enter an exact value when it fits; for a longer decimal, use the remaining spaces to retain as many digits as possible.
03Round an answer to the nearest tenth without an early rounding errorType the whole calculation in one input box in Desmos and round only the final number to the place the question names.
04Match a Desmos decimal to fraction answer choicesCompare fraction choices at the same decimal precision, using exact expressions when rounded displays are too close to distinguish.
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
