FIRE UP!! - PowerPoint PPT Presentation

FIRE UP!!

• Turn in your signed syllabus to the front basket.
• Pickup from Front Desk:
• Parent Function Packet
• ½ Page sheet

Welcome BACK! 

• Distributive Property
• Simplify the following expression. Discuss with your neighbor.
• -2(3x – 5)
• -6x + 10

Discuss with your neighbor reasons you should learn math!

http://youtu.be/yir86f0Uulw

• We can teach our employees the technical parts of the job, but they need to know how to ask the right questions!!
• We are looking for people that are reliable and can problem solve!!!

• 7 Functions to graph and find key information
• Due on test day (9-19/20)
• Counts ½ of the test grade
• Lots of resources
• Websites
• Youtube Videos
• Textbook
• Some time will be given to work on these in class and also ask questions.

Unit 1

Solving Linear Equations

• I can solve equations with one variable

• Variable
• Like Terms

Variable

Any letter or symbol used to represent a number that is not known

Like Terms

Terms that have the same variables raised to the same powers

• Group the like terms together in your notes.
• Now that they are grouped, COMBINE your LIKE Terms.

• Let’s see what we recall from Algebra-1 to solve an equation for a missing variable??

• What steps really happen to solve that equation?

• What happens to a term anytime you move it to the other side of the = ?

• Get the variable terms together on the left side of the equation
• Move all the numbers to the other side of the equation.
• LAST step is always DIVISION (or Multiply by a reciprocal)

2.

x + 1 = 4

x + 1 = 4

x = 3

3

5

5

3

5

3

Multiply each side by , the reciprocal of .

–

–

x = – (3)

The solution is 5.

ANSWER

3

3

3

–

–

–

5

5

5

GUIDED PRACTICE

Solve the equation.

SOLUTION

Write original equation.

Subtract 1 from each side.

x = – 5

Simplify.

• Work with your partner and solve the first 4 problems on the activity.
• Check your answers on the website.

• The bill for the repair of a car was $420. The cost of parts was $240. The cost of labor was $45 per hour. Write an equation and then solve for how many hours the repair took.

• Total cost: $420
• Parts: $240
• Labor: $45 per hour
• Possible Equation:
• Let “x” represent the # of hours
• 240 + 45x = 420
• x = 4 hours

• Work with your partner and solve the last word problem on the activity.
• Check your answer on the website.

No Solution

All Real Numbers

2x + 4 = 2x + 4

When you subtract the 2x you end up with

4 = 4

This is true

Meaning, that every value of “x” will make this equation valid

• 2x + 4 = 2x – 3
• When you subtract the 2x you end up with
• 4 = -3
• This is not true
• Meaning, there is no value for “x” to make this equation valid.

• WS 1-1: Solving Equations
• Signed Syllabus if not already returned
• Work on Parent Function Project