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Final: Round Trip

Part of the Graphs & Systems section of Coddy's Algebra journey. Lesson 61 of 64.

The final challenges combine what you learned in this section. The first one is changing a line from standard form to slope-intercept form. Solve for y, divide every term, and reduce each fraction. For example, take 2x + 3y = 6. Subtract 2x from both sides to get 3y = -2x + 6. Divide every term by 3 to get y = -2/3x + 2. Now you can read the slope, -2/3, and the y-intercept, 2, straight from the equation.

Challenge

Hard

Rewrite 3x - 6y = 12 in slope-intercept form.

Try it yourself

3x - 6y = 12

Solve for y

Test yourself

This 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 Point The Four Quadrants Points on the Axes Mirror Points Recap: The Plane

4Slope-Intercept Form

y = mx + b The Starting Height Write the Equation Solve for y Draw From Any Form Recap: y = mx + b

7Parallel & Perpendicular

Same Slope, Never Meet The Perpendicular Slope A Right-Angle Line Recap: Two Relations

10Systems by Graphing

Two Lines, One Answer Solve by Drawing Check the Crossing When Lines Never Cross Recap: By Graphing

2From Rule to Line

A Rule Makes Points The Points Line Up On the Line or Not?Between the Dots Recap: Rule to Line

5Point-Slope Form

A Point and a Slope From Two Points Flat or Vertical Through Draw From a Point Recap: Point-Slope

8Function Notation

The Name of a Rule Inputs With Signs Find the Input The Graph of f Recap: f(x)

11Solving Systems Exactly

Substitution Isolate First Elimination Scale, Then Add Three Unknowns Two Numbers, Two Facts Recap: Two Methods