### Home > MC2 > Chapter 9 > Lesson 9.3.1 > Problem 9-79

. Paul wrote the rule

*. J'Marcus wrote the rule*

*.*

Are the three equations equivalent, or are they different? Explain your conclusion.

Look at the different parts of each equation. Is

the same as ? Is the same as ? Elyse and J'Marcus have the same equations because the terms can be switched around if they are related by addition.

Paul's equation has a slope of, because is the coefficient to .

The equations that Elyse and J'Marcus wrote have a slope of only, so Paul's equation is different. Which equation (or equations) match the line on the graph?

**Justify**your answer.Find the slope of the line by picking two points on the line and making a slope triangle.

In the equations above, the slope is the coefficient of.