## Geometry and Trigonometry## Analytic Geometry |

## What does point-slope equation of a line refer to in analytic geometry? |

A point-slope equation of a line refers to Cartesian coordinates: If a point has coordinates (*x*_{1}, *y*_{1}) on a line and a slope equal to *m,* then the equation *y* - *y*_{1} = m(*x* - *x*_{1}) is the point-slope equation. Point-slope is most often used when finding an equation of a line.