Finding the Equation of a Line

1 · Gradient and $y$-intercept given 2 · Gradient and a point 3 · Through two points: integer gradient 4 · Through two points: negative gradient 5 · Through two points: fractional gradient 6 · Parallel to a line, through a point 7 · Perpendicular to a line, through a point 8 · Intercepts with the axes 9 · Linear models Mixed 1–9