1: Proportional Relationships
True or False: 1:2 and 2:4 are proportional
True
True or False: When the percent of change is an increase, the original amount is less than the new amount.
True
-15 + 9 = ?
-6
What is a rational number?
A fraction
Find the additive inverse. 10x-1
-10x+1
Are 3:6 and 5:7 proportional?
No
What’s the Formula for Percent of Change?
Amount of Change/Original Amount x 100
9 - -4 = ?
13
⅗ + ⅕
4/5
What is the distributive property?
To multiply a sum or difference by a number, multiply each term inside the parentheses by the number outside the parentheses.
What is the vocabulary term that describes a rate that compares the first quantity per every 1 unit of the second quantity?
Unit Rate
What is the term that describes the amount the store pays for an item?
Wholesale cost
- 5 x - 8 = ?
40
7/10 - 9/10
-2/10 or -1/5
Combine like terms. 4a + 7c - 2 -5a + 2c
-a + 9c - 2
At Store A, you can get 1 shirt for $5 and 2 shirts for $10. At Store 2, you can get one shirt for $5 and 2 shirts for $7. Which store’s prices are proportional?
Store 1
Solve $50 tv with a 10% discount
$45
56 / -7 = ?
-8
2/9 + (-⅔)
-4/9
(8x+7) + (5x+7)
13x +14
Ms. Urie blew up 20 balloons per hour. How many balloons did she blow up in 3 hours?
60
Great Oaks is going to Six Flags. 54 students have permission slips and 18 students don’t. Only students with permission slips may go on the trip. What percentage of the students have permission slips? Say/Write your answer using a percent sign (%).
75%
4 * (- 5 + 4) = ?
-4
⅔ - (-⅙)
5/6
Find the value of x. -5(x+3)=-95
16