Draw From Any Form
Part of the Graphs & Systems section of Coddy's Algebra journey. Lesson 21 of 64.
To draw x + 2y = 4, isolate y: 2y = -x + 4, so y = (-1/2)x + 2. Plot the y-intercept (0, 2) and use the slope -1/2 to find another point.
For a nonvertical line, rearranging to y = mx + b gives its y-intercept b and slope m. Plot the intercept and use the slope to find a second point.
Challenge
MediumRearrange 2x + 4y = 4 into slope-intercept form, then draw the line.
Try it yourself
2x + 4y = 4
Draw the graph
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Graphs & Systems
1The Coordinate Plane
Two Numbers, One PointThe Four QuadrantsPoints on the AxesMirror PointsRecap: The Plane4Slope-Intercept Form
y = mx + bThe Starting HeightWrite the EquationSolve for yDraw From Any FormRecap: y = mx + b7Parallel & Perpendicular
Same Slope, Never MeetThe Perpendicular SlopeA Right-Angle LineRecap: Two Relations2From Rule to Line
A Rule Makes PointsThe Points Line UpOn the Line or Not?Between the DotsRecap: Rule to Line