Simple movable point interactivity

[karkir0003]

Any example code to write a function y = f(x) and given a point on the function, move it along?

Eg: given y = 2x + 5 and the starting point (0,5), how would I use mafs to move the (0,5) point along the y = 2x + 5 function

[karkir0003]

Never mind. Got it to work. I just had to define the constrain as

useMovablePoint(..., {
  constrain:  ([x, y]) => [
    x,
    <enter f(x) here>
  ]
})