Equation
Equation
Definition:
An equation is where two mathematical expressions are equal. Equations help to model real-world situations.
Example
Example
2 = 2
When we say "two mathematical expressions" we're talking about the left side of the equation and the right side of the equation. So saying 2 = 2 is valid.
Example
Example
3x = 6
So when is the left side equal to the right side? When x = 2 since 3 * 2 = 6.
Example
Example
y = 25x + 20
Here's and equation that could model a real world situation. Say that a car rental company loans out a car for $25 per day with an insurance fee of $20. We can write this situation as the equation above.