This document provides formulas and properties for algebra 1 including the slope formula, distance formula, midpoint formula, commutative property, associative property, distributive property, identity property of addition, and identity property of multiplication. It defines slope as "rise over run" and provides the formulas for calculating slope, distance between two points, and midpoint between two points. It also explains the commutative, associative, and distributive properties and provides examples of each.