Concepts 1.1

1
Bell Work 9/25/14
Solve the equation.
2
Heading
5/27/2016
Solving Proportions
TSWBAT solve a proportion.
Students apply algebraic techniques to solve
rate problems, work problems, and percent mixture
problems.
3
Yesterdays Homework

• Any questions?
• Please pass your homework to the front.
• Make sure the correct heading is on your paper.
• Is your NAME on your paper?
• Make sure the homework is 100 complete.
• Incomplete work will NOT be accepted.

4
Notes

• Definitions

• Ratio

Comparison of two quantities.

• Proportion

Two ratios (fractions) that are equal to each
other.
a is to b as c is to d

• Cross-Product Property

5
Notes

• Steps to Solving a Proportion

1. Find the cross-product.

• Make sure that you distribute properly.

• Dont forget about the equal sign in the middle.

2. Solve for x.
6
Notes
Solve the proportion.
Ex.
Ex.
Ex.
Now you try.
Ex.
Ex.
Ex.
7
Notes
Now you try.
Solve the proportion.
Ex.
Ex.
8
Notes
Now you try.
Solve the proportion.
Ex.
Ex.
9
Summary
Write a summary about todays lesson.
To solve a proportion first find the _____
product. Make sure to distribute correctly. Now
that you have a regular equation just solve for
the ________.
cross
variable
10
Ticket Out the Door
Complete the Ticket Out the Door without
talking!!!!!
Talking time after the bell!
Put your NAME on the paper.
When finished, turn your paper face DOWN.
Solve the Proportion.
11
Todays Homework
Rules for Homework

• Pencil ONLY.
• Must show all of your work.
• NO WORK NO CREDIT
• Must attempt EVERY problem.
• Always check your answers.

12
Homework 2.5
Solve the Proportion.