PlotTwist

Type an equation. Launch a comet along its graph.
Collect the stars. Dodge the black hole.

Settings

Black hole Ink limit (stops scribbly graphs) Highlight stars your graph will hit (easy mode) Sound

How to play

Each board has 10 stars sitting on whole-number points, plus one black hole.
Type an equation for y in terms of x. You'll see a dotted preview as you type.
Press Launch. A comet flies along your graph and collects every star it touches.
If the comet touches the black hole, that turn scores zero and the black hole may steal extra turns.

Scoring rewards big combos

Stars in one shot	1	2	3	4	5	10
Points	200	600	1,200	2,000	3,000	11,000

You start with 10 turns. Earn a turn for every 10,000 points and for clearing a whole board.

Things to try

2x + 1 a straight line (slope 2, crosses y at 1)
-x/2 + 3 a line going down
x^2 - 4 a U-shaped parabola
-(x-2)^2 + 5 an upside-down U, moved right 2 and up 5
abs(x) - 3 a V shape
3sin(x) a wave
x/2 + sin(2x) a wiggly line

Lining up two stars: slope = (rise) ÷ (run). From (1, 2) to (3, 6) the rise is 4 and the run is 2, so the slope is 2. Then pick the number that makes the line pass through one of them: 2x + 0.

Tap or hover on the grid to read a point's coordinates.

Game over

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