Writing Equations in Slope-Intercept Form

Overview

Goal. Write the equation of a line in slope-intercept form from a graph, from two points, or from a table — find the slope and the y-intercept first, then write y = mx + b.

Slope-intercept form (definition). The form y = mx + b, where m is the slope of the line and b is its y-intercept.

From a graph, from two points, from a table: slope and intercept first.

Lesson Notes

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Lesson Video

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Interactive Activity

Goal. Build equations of lines from graphs, points, and tables: find m and b, write y = mx + b, and check by substituting a point.

Slope-intercept form (definition). y = mx + b — m is the slope, b is the y-intercept.

Writing Equations in Slope-Intercept Form — Interactive ActivityOpen ›