Slope Intercept Form (y=mx+b) Calculator

The slope intercept form for the equation of any straight line is given by:

y = mx + b

where:
m is the slope of the line
b is the y-intercept of the line

Reference: Khan Academy Intro to slope-intercept form

The slope m of the line through any two points (x₁, y₁) and (x₂, y₂) is given by:

The y-intercept b of the line is the value of y at the point where the line crosses the y axis. Since for point (x₁, y₁) we have y₁ = mx₁ + b, the y-intercept b can be calculated by:

To calculate Slope Intercept Form you need input two points (x1, y1) and (x2, y2). The tool will calculate the slope and the y-intercept of the line based on the formula above. The calculator will show you the chart based on your input as well. You can also download the result in PDF filetype.