Wednesday, November 14, 2007

Defining Variables

Understanding what you are looking for in a situation and then defining it with a variable are an important concept and skill. Linear relationships are the easiest relationships to understand and describe. I am not saying that all these relationships are easy but they are easier than ones you will be studying later this year. Practice does make understanding come easier.

Pay close attention here. These two problems are your ticket to take the quiz tomorrow!

In 1-2, a situation is given. Define the variable and represent the relationship with an equation.

  1. Aisha works 15 hours a week. She has already worked 30 hours this month. How many more weeks must she work to have a total of 120 hours?
  2. Vinnie saved $150 to buy DVDs. After he paid $22 for some DVDs, he had $40 left How many DVD's did he buy?
Write your answers on a half-sheet of lined looseleaf, not paper from your Math Journal. Write your name, the date, and Quiz Ticket at the top of the half-sheet. You must bring this to class tomorrow. Putrickm's homework buddy needs to be sure putrickm got this assignment.

Comment on this question: Were these problems equally easy to understand?

10 comments:

Anonymous said...

I didn't think either question was that difficult, now that I know to be aware whether I'm being asked to write an expression or an equation, but I thought that #2 was the more difficult problem. I thought it was more difficult because it did not use the form ax+b=c, a form we are more fimaliar with. Also you were working with two units (DVDs and dollars) which makes a problem trickier! By the way, on #2, when it says :he payed $22 for some DVDs" does that mean the price of one DVD is $22? That is how I answered the question. What should we study for the quiz tomorrow?

NJM said...

I agree with mmv<3 that neither problem was not that challenging but that #2 was more difficult. I think #2 was more difficult mostly because I did not know what the cost of one DVD was. I am assuming the cost is $22. Also mmv<3, I think the quiz is on 3-1 to 3-4.

jimmy m. said...

The questions were easy to understand but they took some time to solve. P.S. Molly should study 3-1 to 3-4 like njm said.

Gluca said...

I am having the same problem mmv<3 and njm are having, all in all the questions were easy to solve.

JT said...

I agree with everyone that they were nt diffiult problems. I think #2 was only a little bit tricky because the wording was a bit confusing. And ya the quiz is 3-1 to 3-4, well im pretty sure it is.

Anonymous said...

I'm going to agree with mmv<3 that the problems were not super hard but #2 was a bit less clear because I wasn't sure if you meant $22 for each DVD or all of them. But I answered it as if each was $22.


GOOD LUCK ON THE QUIZ EVERYONE!!!!

~ <3 Jen12 <3 ~

Saman Bahadorie said...

mmv<3 I also answered the question as one dvd equals $22. I thought one and two were both easy, if you knew your units. two was a little harder, but you could get both answers. So I guess the quiz is on 3-1-3-4.

Anonymous said...

I guess I'm just repeating what everyone else said, but I thought both questions were not very challenging, except for the wording on number 2. I am going with what mmv<3 said about each DVD costing $22.

gabs16 said...

Neither of the questions were difficult to answer. I personally didn't think #2 was harder then #1...they were both really easy for me to understand! And Yes! I did #2 assuming that each DVD was $22 as well.


♥gabs16

Mrs. Burke said...

I agree that the language in #2 could be ambiguous. It seems that you all managed to work out the meaning, either on your own or on the blog.
The quiz is on Lessons 3-1 through 3-3.