More Functions

We will be re-taking Test 2 on Friday due to many IDK's and a knowledge gap I didn't know about until test day.

Objective

Determine whether a relation is a function or not.

Agenda

Get fundraiser packets (2nd only)

Bellwork (review for retest)

Classwork: Lesson 2.3 problems 2-6

Bellwork

Note that we did not do guess and check. While it is easy to see the answer in the beginning, problems like this help us know what to do in harder problems like the next one which was not actually bellwork.

The most missed problem on the last test was like this one. The most common mistake was not multiplying both sides by 4. Many students just dropped the divided by 4. 

Classwork

Homework

Finish Classwork (See reminders to right for specifics)

I'm lost!

What is a function? (Skip to the definition)  I like that one then I saw this one!

How do I tell on the graphs?

What's next?

Linear functions

More graph stories

Objective

Describe real-world situations that could be represented by a graph

Agenda

Questions from Homework 
Turn in Homework (pg 66 ONLY)
POW Quiz
Classwork

Common Classwork Questions/I am lost

Why does it have 0 on the graph but it says he started at 8 AM?  

The times ARE weird. Time 0 on the graph is actually 8 AM.

When is AM and when it PM?

PM is noon to midnight, AM is ,midnight to noon.

How do I do a rate with temperatures?

The rate's units will be degrees per hour or degrees divided by hours.

Discrete or Continuous? Linear or Nonlinear?

Look back at the earlier part of the lesson and pick one discrete graph and one continuous one. Look at the cards for those. Which one is yours more like. Do the same with linear and nonlinear.

How do I split the graph into sections?

This is not the one from the work. This will make more sense once you try it so I did a different one.

 Find all the places where the steepness changes.

Those changes mark the sections.

Where are those numbers for the intervals coming from?

Look at the x values for where the section starts and end, those are the interval's beginning and end too.

Homework

Finish Classwork

Every Graph Tells a Story

Objective

Describe real-world situations that could be represented by a graph

Bellwork

Problem 4 from "Pretest" paper (study guide)

Classwork

 

Homework

Problem 3 from page 66

I am confused

Some interactive help on graph stories where you do they story and the computer makes the graph. This should help with stopped versus moving

A story graph video explanation 

A Powerpoint Explanation (This is a download)

Coming up

POW Quiz and more graph stories tomorrow

Discrete and Continuous and POW

2.1

Sorry this was late-the blog had some issues. Here's the problems, I will get it arranged better later.

Number 2 should have the number of cards removed rather than a total, but you only need number 1 for the homework.

Common Questions

New Skills

How do I write the expression?

Decide which fruit you want the variable to be- there is not a wrong one to choose.
Read how you can find the prices. What did you do to the price of the fruit you chose to find that price?
If it helps, think of a number to put in place of the price of your fruit. What did you do to that number? Replace the price of the one you picked with the letter you chose to represent it.

Old Skills

How do I do 5(3x-4)?

Using the distributive property.

from here

What is the order of operations?

The order of operations is the order in which we do problems so that they are correct.
Parentheses, Exponents, Multiplication/Division, then Addition/Subtraction

How do I divide by 3/5?

You multiply by 5/3.

Why do I subtract both sides by 2 when it says"+2"?

When we solve equations we are undoing the things that were done to the variable. Think about it:
1+2-2=1          2+2-2=2          3+2-3=3
We do this to both sides to keep the balance.

How to I add/subtract/multiply/divide by a negative?

You can use your flow chart.

How do I put a fraction in the calculator

You use the division sign for the fraction bar.

How do I change a decimal to a fraction in the calculator?

Math Enter Enter

Test Day!

Agenda

Go Over Study Guide
Test

Study Guide Hints

This is a collection of the hints for the study guide from each class.

1st:

Would "she paid twice as much for blueberries as for oranges" be the number of blueberries multiplied by 1/2, divided by 1/2, multiplied by 2, or divided by 2?

Two of those work. Think about it in terms of numbers. If she paid $4 for the blueberries, then how much were the oranges? How did you get that?

2nd:

The question was "On number 7, what do we do about the fraction on the right hand side? This is a problem with the same situation but is not the one on the study guide.

3rd

4th

This is a hint for the second part of number 1.

6th

7th

More Equations

Test FRIDAY

POW Quiz TOMORROW

Classwork/Share Yesterday's Homework

Homework

Pg 32 Problem 1 Numbers 1-3

More Equations

Objective

Solve more problems using equations

Agenda

Get Study Guide
POW
Go over homework
Classwork

POW

Go Over Homework

Classwork

I have no idea what to do!

A rare opportunity

I have this blog set to text me when I get a comment.  Well, I think I do. I haven't tested this. I need some testers.  5 Bonus points to the first three comments from my class sound good? If I get the text, I will get them in as soon as I see it. If not, then you won't know until tomorrow-sorry.

I forgot something! Your comment won't show up right away, I moderate them so no one can say something we don't want to see.

Finishing up 1-2: Infinite and No Solution

It looks like our next test will be on Thursday (maybe Friday if we need it to be). You will get a study guide tomorrow. 

Objective

Solve equations with infinite and no solutions

Agenda

Finish Classwork

Homework

Talk the Talk on page 22-23

Notes

A certain question in the classwork threw most kids off.

H.W. in 4th had a great way to reword this!

 Tonight's homework has a part you might not remember how to do. This is a reminder. I did different problems in each class. Be sure to look at Amy's and Damon's work in the book too.

I am confused.

I have no idea how to do the homework. There's a video here, a written explanation here, and some practice here. 

Infintie and No Solutions

POW quiz tomorrow. Some extra practice can be found here. Most of these are harder than ours. 

Objective

Solve equations with infinite solutions

Agenda

Turn in POW
Bellwork
Classwork (Problem 1 all parts from 1.2)

Bellwork

Classwork

Pages 13-18 on your own.

Homework

Finish yesterday's work if needed.

I am totally confused

The chart didn't have any "=" but it is easy to get hung up on the equations we have been doing. You just needed to change the x into the number for that row, then follow the order of operations.

I couldn't find the ___________ button. Some of our calculators have seen better days. Lots of people have pressed the "y=" button and the "(" ")" buttons so they can be hard to read. Luckily, there isn't a self-destruct so press button! "Clear" or " "2nd" then "Mode" will get you out of anything!  This is an image of the calculator if that helps.

What are we even doing?

Why are we doing this? So we can do this, which is very useful in many jobs you might do someday.

A Part (oops ParK) Ranger's Work STILL isn't done

Objective

Write and solve two step equations

Classwork/Homework

Tips:

1 and 2:  Re-read the problem like it says 2 (or another "friendlier" number) rather than 1 2/3.  What would you do then?  Redo this with the 1 2/3.

3: What did you do to the 10 and 15 in a and b?  Do that to the variable.

4: You might want to use my "friendlier number" trick to think of what to do.

5: Don't you have an expression that equals the number of feet that are left?

More Two Step Equations

POW quiz Friday, POW due Thursday.

Objective

Solve Problems Using Two Step Equations

Agenda

Bellwork
POW
Talk About Homework
Finish 1.1

Bellwork

POW

We started off knowing that Kimberly went to Sea World, Amanda didn't pay with cash, the person who went to Universal didn't use a credit card, and the person who paid with a gift certificate went to Disney. 

We used the things we knew to eliminate what couldn't be true which left us knowing that Universal was paid for with cash and Sea World was paid for with a credit card

We filled in what we figured out. 

We know from the other Payment Type boxes that Amanda didn't pay with cash so she couldn't be the one who went to Universal.

Fill in what was left. We have all the information we need now, but fill in the payment types just to make sure.

Classwork/Checking Homework

 Homework

Choose one from each pair to solve. 

I am lost.

The fractions confuse me, I want to get rid of them.

The fractions confuse me, but getting rid of them was worse. 

Fractions or just whole numbers, I don't know why you are adding when it says subtract or dividing when it says multiply.  I think there was another link for this yesterday. 

I don't remember how to work with the decimals.

Tomorrow

More of the same.

Next up

Equations with infinite or no solutions