Page 9 of 14 · 80 explainers
Knowledge base
More explainers from the knowledge base. Each one names what you need to know first, works through the method, and says where it usually goes wrong.
Examples AlgebraEquation Solving Examples: 10 Worked ProblemsTen equations, each adding one difficulty to the last. The final two are the ones that look like mistakes and are not.
Method AlgebraHow to Solve Equations: Step by StepOne procedure handles almost every equation you will meet. The order of the steps is what makes it work.
Concept AlgebraWhat Is an Equation? Balance and SolutionsAn equation is a claim that two things are equal. Solving it is finding which values make the claim true — and sometimes the answer is none.
Application GraphingSlope in Real Life: Ramps, Roads and RatesSlope is written into building codes and road signs. The number on a steep-hill sign is a slope, and it is doing real work.
Distinction GraphingSlope Intercept vs Standard Form vs Point-SlopeOne line, three ways of writing it. Each hides something and reveals something, and the question decides which trade you want.
Mistakes Graphing5 Common Slope Mistakes and How to Catch ThemFour of the five are caught by a rough sketch. Drawing the two points takes five seconds and settles the sign every time.