Build the slope-intercept equation of a line from a slope and a point. Enter the slope and a point on the line.
Equation
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In y = mx + b form.Usage Tip
The y-intercept is where x = 0; the x-intercept is where y = 0. Set the other variable to zero and solve.
THE MATH
y = mx + b, where m is slope and b is the y-intercept
b = y − m×x at any known point
b = y − m×x at any known point
Slope-intercept form, y = mx + b, is the most common way to write a line: m sets the steepness, b sets where it crosses the y-axis.
From a slope and any point, b is found directly.
From a slope and any point, b is found directly.
Enter the slope and the coordinates of one point on the line.
The y-intercept and x-intercept are computed.
A slope of zero gives a horizontal line.
The y-intercept and x-intercept are computed.
A slope of zero gives a horizontal line.