Try moving it
- Make a negative — the parabola flips; at 0 it degenerates into a line.
- Move only c — the shape stays put and the whole curve shifts vertically. That is what an intercept is.
Template · 2026-08-16 updated
Move a parabola
Drive f(x) = a·x² + b·x + c with three sliders. a opens or closes it, b tilts it, c lifts it — the role of each letter shows up the moment you move it.