📈 FREE Step-by-Step Algebra

Writing Linear Equations from Graphs: students find the y-intercept, count rise and run, build the slope, and write the equation. Free version includes Levels 1–2.

Goal: Write the equation of the line from its graph.
Free • Level 1
Free Version: Levels 1–2 are active. The full version includes all levels, including negative slopes, fraction slopes, horizontal lines, vertical lines, mixed practice, and mastery review.
Big Idea: A line can be written as y = mx + b.Find where it crosses the y-axis for b. Use rise over run for m.
y = mx + b
Use the graph to write the equation.
Find b • Find m • Write y = mx + b
Step-by-Step Work

Graph

Use the graph to answer each step.
Graph Tip: If the graph is hard to see, zoom in on your device.
On most Chromebooks, use Ctrl + + to zoom in and Ctrl + − to zoom out.
On iPads, try pinch-to-zoom with two fingers.