Use the line tool in Desmos to draw a line between two points
Enter the points as ordered pairs, such as `(1,2)` and `(3,4)`
Type the equation of the line through the points using the two-point form
Use `y = mx + b` if you know the slope and intercept
Use `y – y1 = m(x – x1)` with one point and the slope
Use `m = (y2 – y1) / (x2 – x1)` to find the slope between two points
Use `segment((x1,y1),(x2,y2))` to draw only the line segment between two points
Use `polygon((x1,y1),(x2,y2),…)` to connect multiple points in order
Make sure the points are entered in the correct order
Use braces to restrict a line or segment if needed
Plot the points first, then connect them with the appropriate equation or segment command