Try moving it
- Make a negative — the line tilts down; at 0 it goes flat.
- Move only b — the slope stays put and the whole line shifts. That is what an intercept is.
Template · 2026-08-16 updated
Move a line
Drive f(x) = a·x + b with two sliders: a is the slope, b shifts the line up and down. The role of each letter shows up the moment you move it.