Is it a Function?
by Anonymous
Slide a vertical line across graphs to see whether each x gives just one y, and decide which relations are functions.
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About this app
Is it a Function? is an interactive middle-school math app for learning how to identify functions from inputs, outputs, and graphs. Explore the linear rule f(x) = ax + b in a function machine, move a vertical test line across different graphs, and answer function-or-not challenges.
Use cases
- Middle-school students learning functions
- Teachers introducing the vertical line test
- Learners practicing input-output relationships
- Students reviewing graph-based function classification
Features
- Interactive function machine using f(x) = ax + b
- Adjustable coefficients a and b plus input x
- Graph switching with a movable vertical line
- Live count of graph intersections and function verdict
- Four-question function identification challenge with answer streak