Guides Blog About

Loading...

Calculate anything instantly. Free online calculators for math, finance, health, fitness, engineering, and more.

Math & Science

Math
Statistics
Physics
Chemistry
Biology

Finance & Business

Financial
Real Estate
Marketing
SEO
Social Media

Engineering & Tech

Engineering
Construction
Automotive
Programming
Gaming

Health & Lifestyle

Health
Sports
Cooking
Everyday Utilities

Education & Reference

Education
Date & Time
Unit Conversions
Travel
Agriculture

© 2026 CalculateMe. All rights reserved.

About Contact Privacy Terms

Linear Equation Calculator

Linear Equation Calculator

Evaluate the linear equation y = mx + b. Calculate y given slope m, x, and y-intercept b.

Math

Share

Slope (m)

x

y-intercept (b)

Formula

A linear equation in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept. For example, y = 2x + 1 with x=5 gives y = 11.

y = mx + b

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter the slope (m).
2Enter the x-coordinate.
3Enter the y-intercept (b).
4Click Calculate to find y.

Examples

Evaluate y = 2x + 1 at x = 5

1.Enter m=2, x=5, b=1.
2.Calculate: y = 2 × 5 + 1 = 11.
3.Result: y = 11.

Result: 11

Evaluate y = -3x + 4 at x = 2

1.Enter m=-3, x=2, b=4.
2.Calculate: y = (-3) × 2 + 4 = -2.
3.Result: y = -2.

Result: -2

Frequently Asked Questions

The slope m represents the steepness of the line. A positive slope means the line rises, negative means it falls.

The y-intercept b is the point where the line crosses the y-axis (when x = 0).

Yes: rearrange to x = (y − b) / m. For solving equations, use the Equation Solver calculator.

If m = 0, the equation becomes y = b — a horizontal line at y = b.

A vertical line has an undefined slope and cannot be expressed as y = mx + b.

Related Calculators

Equation Solver Quadratic Equation Calculator Percentage Calculator Basic Calculator Addition Calculator Subtraction Calculator

CalculateMe Team

Last updated: 2026-07-13

On This Page

Calculator Result Formula How It Works Examples FAQs

Related

Equation Solver Quadratic Equation Calculator Percentage Calculator Basic Calculator

Linear Equation Calculator - Calculate y = mx + b | CalculateMe | CalculateMe