Introduction to Formulas

Learn what a formula is, how to substitute values, and how to use formulas to solve problems. Let’s get started! 🚀

Introduction to Formulas - introduction visual

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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.

🛎️ What Is a Formula?

  • A formula is a mathematical rule that links two quantities.
  • You substitute x values into a formula to find the corresponding y values.

🛎️ How to Visualise a Formula?

  • Use the formula to make a table of x and y values.
  • Ten plot these values on a graph to see the pattern.

🛎️ Using Formulas to Solve Problems

  • A formula can represent real-life situations like saving money.
  • You substitute values to solve specific problems.

Practice Questions

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