Here you can plot the points of an elliptic curve under modular arithmetic (i.e. over \( \mathbb{F}_p\)).
Enter curve parameters and press 'Draw!' to get the plot and a tabulation of the point additions on this curve.
Interested in arbitrary curves over \(\mathbb{F}_p\)? Try this site instead.
Note: Since it depends on multiplicative inverses, EC Point addition will only work for prime moduli like 2,3,5,7,11,13,17,19,23,29,31,...,109,... ;-)
Draw the elliptic curve \( y^2 = x^3+ax+b \mod r \), where