Answer to Question #300177 in Algebra for Shiibe

Question

Discuss the role of expressions and equations in real life contexts

Answer 1

Expressions describe real life situations where one or more quantities have unknown value or can change in value. To write a variable expression for a real world situation we figure out which quantity in the situation is unknown and define a variable to represent the unknown quantity.

On the other hand, equations in real life provide a very precise way to describe various features of the world. Equations may be used to calculate speed, distance and time of a moving object. It can be used to solve geometrical problems like parabolas.