Unit 5. Day 7..

Slides:



Advertisements
Similar presentations
5.4 Correlation and Best-Fitting Lines
Advertisements

7.RP - Analyze proportional relationships and use them to solve real-world and mathematical problems. 1. Compute unit rates associated with ratios of.
4.7 Graphing Lines Using Slope Intercept Form
1.1 Coordinate Systems and Graphs Cartesian Coordinate System Line – One dimension – Plotting Points Just put a dot! Plane – Two dimensions – Important.
EXAMPLE 3 Write an equation for a function
To write and graph an equation of a direct variation
Constant of Proportionality
Constant of Proportionality and Equations of Graphs
Constant rate of change. InputOutput Put the output # Input # The constant rate of change is ½.
LESSON 10: Interpreting Graphs of Proportional Relationships
Slide 1 Lesson 76 Graphing with Rates Chapter 14 Lesson 76 RR.7Understand that multiplication by rates and ratios can be used to transform an input into.
Warm Up Exercise  Solve each equation for the given variable: (1) V = LWH solve for W (2) A = ½ BH solve for H (3) ax + by = 0 solve for y.
Warm Up. Lesson 10: Interpreting Graphs of Proportional Relationships I can represent proportional relationships by equations. I can explain what a point.
Sample Open-Ended Items This problem requires you to show your work and/or explain your reasoning. You may use drawings, words, and/or numbers in your.
RP Unit 1a: Ratios & Proportional Reasoning. Greatest Common Factor A factor is a number that you multiply by another number to get a product. Example:
Representing Proportional Relationships
2.5 CORRELATION AND BEST-FITTING LINES. IN THIS LESSON YOU WILL : Use a scatter plot to identify the correlation shown by a set of data. Approximate the.
Flour (Cups) Cookies (Dozens) Yes, it is proportional. The ratio of cookies divided by flour is always 4/3 or The.
4.4 – SCATTER PLOTS AND LINES OF FIT Today’s learning goal is that students will be able to: interpret scatter plots, identify correlations between data.
For the graphs that are proportional, write the equation in the form y = kx. If the graph does not show a proportional relationship, write NP (not propoertional).
7.RP.2 Analyze proportional relationships and use them to solve real-world and mathematical problems. Recognize and represent proportional relationships.
Proportionality using Graphs and Tables
Constant of Proportionality
Week Day 7 1 Daniel's recipe for 24 cookies calls for 2 1/2 cups of flour. How much flour will Daniel need to make 60 cookies? A. 1 cup B. 6 1/4 cups.
Proportional Relationships and Graphs
5. 2 Proportions 5. 2 Extension: Graphing Proportional Relationships 5
POD 4 Do the following numbers represent a proportional relationship?
Lesson – Teacher Notes Standard:
Constant of Proportionality
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Constant of Proportionality
What is it and how do I know when I see it?
Direct Variation 4-5 Warm Up Lesson Presentation Lesson Quiz
Proportional Relationships and Tables Ex: 1a
RP Part 1 SBAC Review.
Math 8C Unit 3 – Statistics
Problem of the Day At a concession stand, hamburgers are selling at a rate of 160 hamburgers per hour. The table shows the rate at which wraps are selling.
Unit Rate and Proportional Relationships
8.6.2 Representations of Functions
Constant Rate of change
Lesson 7.9 Identifying Proportional Relationships
Splash Screen.
Lesson 4.5 Functions Fitted to Data
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Using Graphs to Relate Two Quantities
Objectives Identify linear functions and linear equations.
15% of 320 meters is what length? 24 is what percent of 60?
Dot Plots and Distributions
Altering the yield Why ? To change the quantity.
Proportional Reasoning
Day 8 – Linear Inequalities
Proportional Relationships (Graphs)
Identifying Linear Functions
Lesson – Teacher Notes Standard:
Lesson – Teacher Notes Standard: 7.RP.A.2a, d
Direct Proportion also known as Direct Variation
Constant Rate of Change
Cookie Chemistry Ms. Chang.
Objective Identify, write, and graph direct variation.
Proportionality using Graphs and Tables
Lesson – Teacher Notes Standard:
Name:___________________________ Date:______________
Solutions of Linear Functions
Objectives Identify functions.
Proportional Relationships and Graphs
Graph Proportional Relationships
Proportional or Non-proportional?
Warm Up 1. Solve 2x – 3y = 12 for y. 2. Graph for D: {–10, –5, 0, 5, 10}.
Interpreting Graphs of Proportional Relationships
Presentation transcript:

Unit 5. Day 7.

Groups

Example A: Grandma’s special chocolate chip cookie recipe, which yields 4 dozen cookies, calls for 3 cups of flour.

Example A: Grandma’s special chocolate chip cookie recipe, which yields 4 dozen cookies, calls for 3 cups of flour.

Example A: Grandma’s special chocolate chip cookie recipe, which yields 4 dozen cookies, calls for 3 cups of flour. 12 minutes

4 dozen cookies / 3 cups of flour. Number of dozens of cookies 𝑐𝑢𝑝𝑠 𝑜𝑓 𝑓𝑙𝑜𝑢𝑟 𝑖𝑛𝑑𝑒𝑝𝑒𝑛𝑑𝑒𝑛𝑡 𝑑𝑒𝑝𝑒𝑛𝑑𝑒𝑛𝑡 3 4 6 8 9 12 Create a table comparing the amount of flour used to the amount of cookies.

3 4 6 8 9 12 proportional 4 3 4 3 4 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 𝑓𝑙𝑜𝑢𝑟 4 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 𝑓𝑙𝑜𝑢𝑟 8 4 dozen cookies / 3 cups of flour. Number of dozens of cookies 𝑐𝑢𝑝𝑠 𝑜𝑓 𝑓𝑙𝑜𝑢𝑟 3 4 6 8 9 12 proportional 4 3 4 3 4 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 𝑓𝑙𝑜𝑢𝑟 4 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 𝑓𝑙𝑜𝑢𝑟 8 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 𝑓𝑙𝑜𝑢𝑟 12 1 3 1 6 1 9 Is the number of cookies proportional to the amount of flour used? Explain why or why not.

1 1 3 dozen cookies (16 cookies) can be made using 1 cup of flour. 4 dozen cookies / 3 cups of flour. 4 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 1 𝑓𝑙𝑜𝑢𝑟 1 1 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 1 𝑓𝑙𝑜𝑢𝑟 1 1 3 dozen cookies (16 cookies) can be made using 1 cup of flour. What is the unit rate of cookies to flour 𝑦 𝑥 , and what is the meaning in the context of the problem?

Model the relationship on a graph. 𝑦 Cups of flour Number of dozens of cookies 3 4 6 8 9 12 𝑥 𝑦 4 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 1 𝑓𝑙𝑜𝑢𝑟 𝑥 1 1 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 1 𝑓𝑙𝑜𝑢𝑟 Model the relationship on a graph.

The points appear on a line that passes through the origin (0, 0) 𝑦 The points appear on a line that passes through the origin (0, 0) 𝑥 Does the graph show the two quantities being proportional to each other? Explain.

𝑦 4 3 𝑐𝑜𝑜𝑘𝑖𝑒𝑠 1 𝑓𝑙𝑜𝑢𝑟 Cups of flour Number of dozens of cookies 3 4 6 8 9 12 𝑥 𝑦 𝑦= 4 3 𝑥 𝑥 Write an equation that can be used to represent the relationship.

Example A: Example B: 6 minutes

Example B: Below is a graph modeling the amount of sugar required to make Grandma’s special chocolate chip cookies.

a) Record the coordinates from the graph a) Record the coordinates from the graph. What do these ordered pairs represent? 0, 0 0 cups of sugar will result in 0 dozen cookies 2, 3 2 cups of sugar will result in 3 dozen cookies 4, 6 4 cups of sugar will result in 6 dozen cookies 8, 12 8 cups of sugar will result in 12 dozen cookies 12, 18 12 cups of sugar will result in 18 dozen cookies 16, 24 16 cups of sugar will result in 24 dozen cookies

b) Grandma has 1 remaining cup of sugar b) Grandma has 1 remaining cup of sugar. How many dozen cookies will she be able to make? Plot the point on the graph above 1 , 1.5

b) How many dozen cookies can Grandma make if she has no sugar b) How many dozen cookies can Grandma make if she has no sugar? Can you graph this on the coordinate plane provided above? What do we call this point? , The origin

Example A: Example B: Example C: 6 minutes

Example C: The graph below shows the amount of time a person can shower with a certain amount of water.

a) Can you determine by looking at the graph whether the length of the shower is proportional to the number of gallons of water? Explain how you know Yes, the quantities are proportional to each other since all points lie on a line that passes through the origin (0, 0).

b) How long can a person shower with 15 gallons of water? 5 minutes 20 minutes

c) What are the coordinates of point 𝐴? Describe point 𝐴 in the context of the problem? (30, 10) If there are 30 gallons of water, then a person can shower for 10 minutes

d) Can you use the graph to identify the unit rate? 𝑚𝑖𝑛 𝑔𝑎𝑙 5 5 15 𝑚𝑖𝑛 𝑔𝑎𝑙 5 ÷15 1 3 𝑚𝑖𝑛 1 𝑔𝑎𝑙 15 ÷15 Too small to tell

e) Write the equation to represent the relationship between the number of gallons of water used and the length of a shower. 1 3 𝑚𝑖𝑛 1 𝑔𝑎𝑙 1 3 𝑚 = 𝑔