GCSE Secondary Maths Age 13-17 - Algebra: Algebraic Equations - Explained

The video tutorial explains how to solve an algebraic equation by substituting a given value and then rearranging the formula to make a different variable the subject. Initially, the value of T is calculated when V equals 2. The process involves substituting V into the equation and performing arithmetic operations to find T. The tutorial then shifts focus to making V the subject of the formula. This involves rearranging the equation by isolating V through subtraction and division. The video emphasizes understanding the concept of the subject of a formula and provides step-by-step guidance on rearranging equations.

What is the value of T when V equals 2 in the formula T = 4V + 3?

• 12

• 11

• 10

• 9

In the formula T = 4V + 3, what is the first step to make V the subject?

• Multiply both sides by 4

• Divide both sides by 4

• Subtract 3 from both sides

• Add 3 to both sides

What is the final formula for V when rearranging T = 4V + 3?

• V = 4(T - 3)

• V = 4T - 3

• V = (T - 3) / 4

• V = (T + 3) / 4

Why is it important to remove terms that do not contain the variable when making it the subject?

• To make the equation longer

• To add complexity

• To isolate the variable

• To simplify the equation

What does it mean to make a variable the subject of a formula?

• To solve for the variable

• To eliminate the variable

• To start the formula with the variable

• To add the variable to both sides