The content is just an excerpt from the complete note for SS1 First Term Mathematics Lesson Note – Simple Equations and Variations. Check below to download the complete DOCUMENT
WEEK 9
SUBJECT: MATHEMATICS
CLASS: SS 1
TOPIC: Simple Equations and variations:
CONTENT:
- Formulae, substitution and Change of subject of formulae.
- simple binary operations.
- Variations (i) Direct and inverse, (ii) joint and partial.
- Application of variation.
SUBJECT OF A FORMULA
The subject of a formula is the variable that is expressed in term 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=2x-3 , the x can be made subject of formula as follows, x = .
SUBSTITUTION
A formula is an equation in which letters represent quantities. The value of one variable in a formula or algebraic equation may be found by substituting (i.e replacing) known values in the same formula
To gain full access to the note: DOWNLOAD FILE
