Start with the equation of the line
Rewrite it in slope-intercept form: y = mx + b
Identify m as the slope
Identify b as the y-intercept
If given two points, find the slope using m = (y2 – y1) / (x2 – x1)
Substitute the slope and one point into y = mx + b
Solve for b
Write the final equation as y = mx + b