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Substitution & Rearranging Equations

Algebra HOME | Achievement Objectives | Simplify | Expanding | Factorising | Indices | Rearrange | Logs | Fractions | Linear Equations | Inequations | Solving Quadratics equations | Quadratic Formula | Revision

10



Rearranging

The 'subject' of an equation. Rearrange equations to make a different variable the subject of the equation
Rearranging applications and problems in context.
Rational expressions

 

Class notes, Blank notes

Ex4.01, Ex4.02, Ex4.03

Theta pg 15 & 16

NuLake EAS Q142 - 172

11



Rational rearrangements

Rearranging roots, Rearranging rational expressions involving expanding and factorising

 

Class notes, Blank notes

Ex4.04, Ex4.05, Ex4.06

Theta pg 17 & 18

NuLake EAS Q142 - 172

Rearranging

The equation y = 4x + 3   has 'y' the subject.

t = 0.45m + 0.5s   has 't' the subject

To change the subject we rearrange

1) Make 'e' the subject

Solution

2) Make 'x' the subject

Solution

3) Make 'w' the subject

Solution

Mouse over key words

 

Rearrange or use backtracking

 

Summary:

make 'e' the subject
Make 'x' the subject
 
 

 

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