Please take out the following: Lined piece of paper Pencil Red pen

Slides:



Advertisements
Similar presentations
9th Grade Objective 3 TAKS Study Guide.
Advertisements

Identifying and Representing Proportional Relationships
7.1 The Meanings of Ratio, Rate, and Proportion
 A constant ratio in any proportional relationship  Really just another name for unit rate! Remember, to be constant means it never changes!
Inverse Variation Inverse Variation. Do you remember? Direct Variation Use y = kx. Means “y v vv varies directly with x.” k is called the c cc constant.
Unit Rate and proportional reasoning
1) How much paper is needed to wrap a cube with a side length of 12 cm? 2) Find the area.
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Common Assessment Quarter 2Test 1 Please read the questions carefully. Use scratch paper to work through the problems and record your answers on your answer.
Bell Quiz. Objectives Solve rate and ratio problems.
Question 1 The recipe for chocolate chip cookies requires 2 cups of chocolate chips for every 6 cups of flour. What is the ratio of chocolate chips to.
5-4 Direct Variation Warm Up 1. Regina walked 9 miles in 3 hours. How many miles did she walk per hour? 2. To make 3 bowls of trail mix, Sandra needs 15.
Warm Up. Lesson 10: Interpreting Graphs of Proportional Relationships I can represent proportional relationships by equations. I can explain what a point.
Constant Rates of Changes. Warm Up 1.Suppose the tortoise travels for 12 seconds, how would you find the distance traveled? 2.How would you describe.
 Step 1: Identify comparison ◦ Example: Height of tree to the cost  Step 2: Write down rate proportion ◦ Example:  Step 3: Substitute values from problem.
DO NOW Martina drove miles in 3 hours. At this rate, how far did Martina drive in one hour? Show all work.
Lesson 6 & 7 Unit 5. Objectives Be able to find equations for direct variation: y = kx Be able to find equations for inverse variation: y = k/x Be able.
Direct Variation 2.4. Big idea… 5280ft=1mile. There will always be the same number of feet in a mile, so they are “directly proportional”
5-4 Direct Variation Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.
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.
: Jeopardy Title: Jeopardy Review Game By: Problems.
You need: Pencil Agenda Scrap Paper AP log Put all other materials in floor or in a desk NOW!
2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt 1-step Equations 2-step Equations.
March 28, 2016 March 28, 2016 Warm-Up: Take out the group work from Friday. Be prepared to start immediately!
Tables, Graphs, Equations and Proportions REVIEW.
You need: Pencil Agenda Scrap Paper AP log Put all other materials in floor or in a desk NOW!
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).
DIRECT VARIATION September 8 & 9,
Lesson – Teacher Notes Standard:
NOTES 1-1C & D: PROPERTIES DIRECT & INVERSE (INDIRECT) VARIATION
Unit 3 rates, proportions and percentages
Chapter 1.9 Direct Variation.
PARCC DO NOW
Lesson – Teacher Notes Standard:
Constant of Proportionality
Chapter 3 Ratios and Rates
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Chapter Direct variation.
WELCOME PRESENTATION.
of Tables and Equations
Constant of Proportionality
Pre-Algebra 11-5 Direct Variation
Proportional Relationships and Tables Ex: 1a
1. Tire Pressure Experiment
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
(7.4A) The graph below shows the relationship between the number of dollars a worker earns and the number of hours worked. What is the constant rate.
of Tables and Equations
Warm Up Solve for y y = 2x 2. 6x = 3y
Unit 5. Day 7..
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Interpreting the Unit Rate as Slope
Proportional Relationships
3rd Six Weeks Warm-Ups.
Unit 5. Day 14..
Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.
Claim 1 Smarter Balanced Sample Items Grade 7 - Target A
Proportional Reasoning
Solving Proportions – Table 1
Lesson – Teacher Notes Standard:
Cookie Chemistry Ms. Chang.
Objective Identify, write, and graph direct variation.

Proportional Word Problems Guided Notes
Lesson – Teacher Notes Standard:
Proportional Relationships and Graphs
Learning Target Students will be able to: Identify, write, and graph direct variation.
5.5 Proportional and Nonproportional relationships
of Tables and Equations
Section 2.3 Direct Variation.
Presentation transcript:

Please take out the following: Lined piece of paper Pencil Red pen Welcome!  Please take out the following: Lined piece of paper Pencil Red pen Students will be able to identify intervals of increase, decrease, and constant values of a function.

Find the unit rate for each and compare Find the unit rate for each and compare. Then write a statement describing the relationship between the rates. Matt drove at 75 miles per hour for 1.5 hours. Dave drove 187.5 miles in 2.5 hours and Sarah drove 131.25 miles in 1.75 hours. The unit rate is 75 miles per hour for Matt, Dave and Sarah

Find the unit rate for each and compare Find the unit rate for each and compare. Then write a statement describing the relationship between the rates.  Ally drove at 90 miles per hour for 1.25 hours. Hannah drove 135 miles in 2.25 hours and Nate drove 105 miles in 1.5 hours. Ally: 90 miles per hour Hannah: 60 miles per hour Nate: 70 miles per hour Ally had the quickest driving rate & Hannah had the slowest driving rate.

The amount of commission Ryan earns at his job is directly proportional to the amount of sales he earns. What does the constant of variation represent in this situation? The constant of variation represents the commission rate per sale.

An ant walks at a constant rate for 10 minutes An ant walks at a constant rate for 10 minutes. What does the constant of variation represent in this situation? Constant rate or 5 cm per min.? The constant of variation represents the walking rate per minute.

Cups of chocolate chips in chocolate chip cookies Servings 2.5 5 7.5 10 15 Chocolate Chips (cups) 1 2 1 1 1 2 2 3 Write an equation that represents the number of cups of chocolate chips and the number of servings of chocolate chip cookies, where c represents the number of cups of chocolate chips and e represents the number of servings of chocolate chip cookies. e = 5c or c = 1/5e

Ms. Jaffess’ banana bread recipe calls for 4 parts banana to 1 part walnuts. Determine the constant of proportionality from the information given for the recipe. Then, write an equation for the amount of banana (b) based on the amount of walnuts (w). Constant rate or 5 cm per min.? b=4w or w=¼b

The sale price, p, of an item is 60% of the regular price, r The sale price, p, of an item is 60% of the regular price, r. Write an equation to represent this relationship. p=.60r Constant rate or 5 cm per min.?

A 16-ounce box of cereal cost $7. 20 A 16-ounce box of cereal cost $7.20. Write an equation that shows the relationship between the price (p) and the weight (w) of the cereal. Constant rate or 5 cm per min.? p=.45w

A 15-ounce box of cereal cost $4. 50 A 15-ounce box of cereal cost $4.50. Write an equation that shows the relationship between the price (p) and the weight (w) of the cereal. Constant rate or 5 cm per min.? p=.3w