Interactive math tool
Linear Function Graphing Tool
Free interactive linear function graphing tool. Adjust slope k and intercept b to see how a line tilts and shifts — ideal for class demos.
The graph of y = kx + b is a straight line. k controls tilt; b controls the y-intercept. Dragging parameters makes “change slope vs translate” obvious.
How it works
- Open the linear function visualization.
- Change k to see rising/falling steepness.
- Change b to translate the line vertically.
- Have learners state what k and b each control.
Classroom example
Compare k = 1 and k = −2 for sign and steepness. Then keep k fixed and vary only b to show translation without changing tilt.
FAQ
Is this useful for slope-intercept lessons?
Yes. Project and drag live so slope and intercept become observable, not just definitions.