Algebra 1 covers concepts all the way from arithmetic to roots and radicals.
Real numbers and variables
Solving equations and inequalities
Graphing linear equations
Algebra 1 covers early algebra concepts including arithmetic and evaluation of expressions involving signed numbers, exponents and roots, equations and inequalities involving absolute value, scientific notation, unit conversions, solution of equations in one or several variables, polynomials and rational expressions, graphical solution of simultaneous equations and functions, factoring, Pythagorean theorem, algebraic proofs, solution of quadratic equations, direct and inverse variation, exponential growth, and using algebra to solve geometric problems.
Homeschool Algebra does not require any prerequisites.