8th Grade Math: Writing Linear Equations Tutorials

Happy Saturday Everyone,

Reminders:

• Pattern Projects Due Monday/Tuesday
• Quiz over Linear Equations on Wednesday/Thursday

We have been working on putting together all the parts of writing linear equations over the last month. We have looked at equations through patterns, real world examples, tables, and graphs.

Key Things to Remember:

• y = mx+b (is the base equation for all linear equations)
• m represents the rate of change/slope
• b represents the starting point and y-intercept.
• Slope is the steepness of a line. The rate of change of the line.
• Y-intercept is where the line crosses the y-axis.
• Slope and rate of change are found by finding the change in y divided by the change in x.

Tutorial Videos:

Writing Linear Equations from Tables

Writing Linear Equations from Graphs

Writing a Linear Equation from a Word Problem

Hope you find these videos helpful! We only have one more week before break. Keep giving 100% this week. If you need any help with your project, send me an email or message me on celly.

If you are missing a test, please complete this before break!

Have a Super Saturday,

Mrs. Gilliam

     

8th Graders: How to Study for Unit 2 Test

Happy Sunday Everyone,

Do not forget we are taking Unit 2 Test this week!

The best way to study for a test is to study a little each night before the test. Below I have listed some helpful tips, that can prepare you for the upcoming test.

1. Read over your notes in your notebook. Cover up the answers to the problems and rework them out.

2. Watch any of the following helpful videos. Work through each problem as the instructor works through the problem.

















3. Complete extra practice problems where you know the answer. Below I have listed some worksheets and sites you can use to practice.

Solving Equations Worksheet with Answers

Khan Academy Practice Problems: Variables on Both Sides

Khan Academy Distributive Property Practice

Word Problems Using Equations Practice Problems

Remember it is spirit week! Wear your pink tomorrow!

Have a Great Day,
Mrs. Gilliam

PS
One point on class dojo for any one that comments with the correct answer: 5(3x + 2) = 70

8th Graders: Introduction to Variables on Both Sides of the Equation

On Wednesday and Thursday, we discussed the problem below:

Amber and Blake bought the same amount candy.

They both received the candy in a different way.

• Amber received 2 boxes with an unknown amount plus 4 candies in a bag.

• Blake received 1 box of an unknown amount plus 10 candies in a bag.

Write an equation and solve how many pieces of candy are in each box?

Several students started out by creating two expressions, one for Amber and one for Blake.

2x + 4       and 1x + 10

A few students decided to make an equation for each student.

C= 2x + 4              and            C= 1x + 10

C= the amount of candy in one box

We then discussed one of the most important words in the problem, SAME.

Everyone remembered, same meant an equal quantity.

We also decided if C=C then,

2x + 4 = 1x + 10

Next, we decided we needed to combine like terms but this time we had to take into account the equal sign being in between the variables.

We remembered the golden rule for equations, when crossing the equal sign we must complete the inverse operation. Below is how we finished solving it.

Finally, we discussed how do we know if this makes sense. Several students suggested plugging in 6 to each of the expressions/equations above to see if the students received the same amount of candy.

They both received 16 candies. We can say x = 6 is correct because Amber received 16 and Blake received 16 or you can say because 16=16

We will continue working on solving real world problems and equations with variables on both sides of the equal sign tomorrow. We are testing on Unit 2, next Monday and Tuesday.

Have a Great Night,

Mrs. Gilliam

GO LJHS Volleyball! Beat WJHS!