# 8.5 Functions and Volume

### Lesson 1

- I can write rules when I know input-output pairs.
- I know how an input-output diagram represents a rule.

### Lesson 2

- I know that a function is a rule with exactly one output for each allowable input.
- I know that if a rule has exactly one output for each allowable input, then the output depends on the input.

### Lesson 3

- I can find the output of a function when I know the input.
- I can name the independent and dependent variables for a given function and represent the function with an equation.

### Lesson 4

- I can identify graphs that do, and do not, represent functions.
- I can use a graph of a function to find the output for a given input and to find the input(s) for a given output.

### Lesson 5

- I can explain the story told by the graph of a function.

### Lesson 6

- I can draw the graph of a function that represents a real-world situation.

### Lesson 7

- I can compare inputs and outputs of functions that are represented in different ways.

### Lesson 8

- I can determine whether a function is increasing or decreasing based on whether its rate of change is positive or negative.
- I can explain in my own words how the graph of a linear function relates to its rate of change and initial value.

### Lesson 9

- I can decide when a linear function is a good model for data and when it is not.
- I can use data points to model a linear function.

### Lesson 10

- I can create graphs of non-linear functions with pieces of linear functions.

### Lesson 11

- I can collect data about a function and represent it as a graph.
- I can describe the graph of a function in words.

### Lesson 12

- I know that volume is the amount of space contained inside a three-dimensional figure.
- I recognize the 3D shapes cylinder, cone, rectangular prism, and sphere.

### Lesson 13

- I can find the volume of a cylinder in mathematical and real-world situations.
- I know the formula for volume of a cylinder.

### Lesson 14

- I can find missing information about a cylinder if I know its volume and some other information.

### Lesson 15

- I can find the volume of a cone in mathematical and real-world situations.
- I know the formula for the volume of a cone.

### Lesson 16

- I can find missing information of about a cone if I know its volume and some other information.

### Lesson 17

- I can create a graph the relationship between volume and height for all cylinders (or cones) with a fixed radius.
- I can explain in my own words why changing the height by a scale factor changes the volume by the same scale factor.

### Lesson 18

- I can create a graph representing the relationship between volume and radius for all cylinders (or cones) with a fixed height.
- I can explain in my own words why changing the radius by a scale factor changes the volume by the scale factor squared.

### Lesson 19

- I can estimate the volume of a hemisphere by calculating the volume of shape I know is larger and the volume of a shape I know is smaller.

### Lesson 20

- I can find the volume of a sphere when I know the radius.

### Lesson 21

- I can find the radius of a sphere if I know its volume.
- I can solve mathematical and real-world problems about the volume of cylinders, cones, and spheres.

### Lesson 22

- I can compare functions about volume represented in different ways.