What are linear equations and problem solving?

Linear equations are equations of the form:

ax + b = 0

where a and b are constants and x is the variable. 

Problem solving is the process of finding solutions to different problems. Linear equations can be used to solve a wide variety of problems. For example, we can use linear equations to:

1. Find the unknowns in a given situation.
2. Model real-world phenomena.
3. Make predictions.
4. Optimize solutions.

What are the uses of the subject?

Linear equations and problem solving are used in many different fields. 

1. These are useful in the fields of science, including physics, chemistry, and biology. For example, linear equations can be used to model the motion of a projectile, the growth of a population, or the spread of a disease.
2. Linear equations are used in many areas of engineering, such as civil engineering, mechanical engineering, and electrical engineering. For example, linear equations can be used to design bridges, buildings, and electrical circuits.
3. Linear equations are also used in many areas of economics, such as microeconomics and macroeconomics. For example, using linear equations, economists can model the supply and demand of goods and services or predict the growth of the economy.

Why study Linear equations and problem solving?

Studying linear equations and problem solving gives a strong foundation in mathematics, which is the basis of almost every job role. This includes careers of a scientist, engineer, and economist.