Elimination Method

Add or subtract equations to eliminate a variable.

1️⃣

Watch the video

Start here (or skip if you already know it)

2️⃣

Visualize it

Explore it, then spot the correct graph

3️⃣

Practice problems

Answer 3 problems (80%+ correct)

Step 1: Watch

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Solving Systems by Elimination & Substitution

The Organic Chemistry Tutor · 10:26

Play with the interactive model to see how the math works, then test yourself by spotting the correct graph.

Move the controls and watch the math change — build a picture in your head before you solve.

y = 1x + 2

Slope (m)1y-intercept (b)2

The slope 1 tells you to go up 1 for every 1 step right. The y-intercept 2 is where the line crosses the y-axis, at the point (0, 2).

Answer 3 problems with at least 80% correct to complete this skill.

Problem 1

Solve: x + y = 10 and x − y = 4. What is x?

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