Simple Equations

Mathematics SSS 1 First Term

WEEK 11

Simple Equations

Performance Objectives

Students should be able to;

1. Calculate the change of subject of formula
2. Follow process involved in changing the subject in a formula
3. Substitute in the formula

Subject of Formula

Content

The subject of a formula is the variable that is expressed in terms of the other variables. In the relation y = x + 4, y is called the subject of the formula. To make x the subject means rewriting this relation in an equivalent form, where x will be alone on one side of the equality sign. The relation is normally written with the subject on the left-hand side of the formula. For example, y = 2 ×…