College Algebra and Precalculus Calculators
Explore lines, quadratic roots, inequalities, exponents and logarithms.
Connect an equation, its graph and the situation it describes. This collection supports the algebra used in first-year science, business and engineering courses.
Begin with slopes and systems, then compare quadratic roots with the vertex and intercepts. Use inequalities to distinguish a boundary from the region that satisfies a condition. Check domain restrictions before working with logarithms.
The tools cover specific equation forms shown on each page. They are not general symbolic solvers, and this collection does not cover an entire precalculus syllabus.
Key Concepts
- •Move between two points, slope and equations.
- •Check roots, graph features and solution regions.
- •Check inverse operations and allowed inputs.
Prerequisites
Signed numbers and fractions
Keep signs and operations consistent during substitution.
Coordinate plane
Interpret an ordered pair and identify intercepts.
1. Lines and systems
Move between two points, slope and equations.
Slope Calculator
Calculate the slope of a line passing through two points as rise over run (change in y divided by change in x).
Distance Formula Calculator
Calculate the Euclidean distance between two points in 2D or 3D space.
System of Equations Calculator (2x2)
Solve a system of two linear equations with two unknowns: a₁x + b₁y = c₁ and a₂x + b₂y = c₂.
2. Quadratics and inequalities
Check roots, graph features and solution regions.
Quadratic Formula Calculator
Solve any quadratic equation ax² + bx + c = 0 using the quadratic formula. Finds both real and complex roots with step-by-step solutions.
Graphing Inequalities Calculator
Solve and graph linear inequalities ax + b < c, ax + b > c, ax + b ≤ c, or ax + b ≥ c on the number line.
3. Powers and logarithms
Check inverse operations and allowed inputs.
Exponent Calculator
Calculate the value of a base raised to a power (bⁿ). Supports integer, fractional, and negative exponents.
Logarithm Calculator
Calculate logarithms with any base including common log (base 10), natural log (base e), and binary log (base 2). Essential for math, engineering, science, and computer science.