point-slope form

noun

: the equation of a straight line in the form y − y₁ = m(x − x₁) where m is the slope of the line and (x₁, y₁) are the coordinates of a given point on the line compare slope-intercept form

Word History

First Known Use

1904, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now