# Unit 3: My Reflections

## Lesson 1: Understanding Proportional Relationships

• I can use the constant of proportionality to compare the pace of different animals.
• I can graph a proportional relationship from a story.

## Lesson 2: Graphs of Proportional Relationships

• I can graph a proportional relationship from an equation.
• I can tell when two graphs are of the same proportional relationship even if the scales are different.

## Lesson 3: Representing Proportional Relationships

• I can scale and label a coordinate axes in order to graph a proportional relationship.

## Lesson 4: Comparing Proportional Relationships

• I can compare proportional relationships represented in different ways.

## Lesson 5: Introduction to Linear Relationships

• I can find the rate of change of a linear relationship by figuring out the slope of the line representing the relationship.

## Lesson 6: More Linear Relationships

• I can interpret the vertical intercept of a graph of a real-world situation.
• I can match graphs to the real-world situations they represent by identifying the slope and the vertical intercept.

## Lesson 7: Representations of Linear Relationships

• I can write an equation for the relationship between the total volume in a graduated cylinder and the number of objects added to the graduated cylinder.
• I can use patterns to write a linear equation to represent a situation.

## Lesson 8: Translating to $y=mx+b$

• I can write equations of lines using y=mx+b.
• I can explain where to find the slope and vertical intercept in both an equation and its graph.

## Lesson 9: Slopes Don't Have to be Positive

• I can look at a graph and tell if the slope is positive or negative and explain how I know.
• I can give an example of a situation that would have a negative slope when graphed.

## Lesson 10: Calculating Slope

• I can describe a line precisely enough that another student can draw it.
• I can calculate positive and negative slopes given two points on the line.

## Lesson 11: Equations of All Kinds of Lines

• I can write equations of lines that have a positive or a negative slope.
• I can write equations of vertical and horizontal lines.

## Lesson 12: Solutions to Linear Equations

• I understand what the solution to an equation in two variables is.
• I know that the graph of an equation is a visual representation of all the solutions to the equation.

## Lesson 13: More Solutions to Linear Equations

• I can find solutions $(x, y)$ to linear equations given either the $x$- or the $y$-value to start from.

## Lesson 14: Using Linear Relations to Solve Problems

• I can write linear equations to reason about real-world situations.