When Will You Use Linear Equations in Real Life?

When Will You Use Linear Equations in Real Life?

Everyday budgeting and other financial issues often use linear equations. Linear equations involve two values that change according to a consistent pattern.

In an equation, the consistent value is called the rate of change or slope, and it is a known value.

Linear equations can solve practical matters in life, such as:

  • The equation for a cellphone bill with a flat rate of $25 per month plus 25 cents per message would be y = 25 + 0.25x, with x as the number of messages and y as the monthly cost.
  • The equation for taxi cab fares based on a set fee of $2 per mile would be y = 2x, with x as the amount of electricity used and y as the amount of the bill.