This document provides a review of key algebra 1 concepts including equations of lines, solving various types of equations, factoring polynomials, expressions and equations involving perimeter, area, and geometry. Students are given examples to solve of each concept, including solving systems of equations, simplifying expressions, graphing lines, and determining equations of lines given points or other criteria. The review covers standard form, slope-intercept form, point-slope form of a line, solving linear and quadratic equations, factoring polynomials, perimeter, area, geometry relationships, graphing, and determining equations of lines from information provided.