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Introduction to Formulas

Algebra and Graphs Introduction to Formulas

🎬 Video Tutorial

(0:01) Understanding Formulas: A formula is a mathematical equation that describes the relationship between two variables, such as $y = 2x + 3$.
(0:38) Calculating Values with Formulas: By substituting known values into a formula, you can find corresponding values; for example, if $x = 2$ in $y = 2x + 3$, then $y = 7$.
(1:32) Solving Real-Life Problems with Formulas: For example, $y = 20 + 12x$ represents the total savings over weeks, allowing you to determine the time needed to reach a savings goal.

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📂 Revision Cards

Introduction to formulas showing a mathematical equation y = 2x + 3, with examples for x values of 1, 2, and 3, and the definition of a formula.

Visualising formulas using a table and a graph for the equation y = 2x + 3.

Chart explaining how to use the formula y = 20 + 12x to calculate savings, with an example showing it takes 5 weeks to save £80.

ChatCat (AI Math Tutor)

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