functionA rule that assigns exactly one output to each allowed input.
You’ll leave with these skills
01Explain what a point, the slope, or an intercept of a graph means in contextRead the axis labels to say what a point, the slope, or an intercept means in the story.
02Find a curve’s greatest y-value and when it happensFind the highest point on the curve and read its y-value for the greatest amount and its x-value for the time it happens.
03Find when a steadily shrinking amount reaches zeroFind the slope from two points on the falling line, then set y equal to zero and solve for x.
04Check where a graphed line crosses each axis in DesmosGraph the line’s equation in Desmos and click where it crosses each axis to check the starting amount and when it reaches zero.
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
