Explain how you can tell whether a linear function can be used to model a real-life relationship.

Answer: Yes, you can tell how to model real life relationships. For example, a linear function is written at y=mx+b. Y is the total value, b is initial value, and m is the slope of the function.Step-by-step explanation:Real life example:Your school needs to raise money. To do this, they host a school dance! The admission is $5 (initial cost, b), plus an additional $3 dollars for drinks. 3 would be the slope per drink, so this can be represented by y=3x+5!