per 1, each 1, every 1
Usually associated with costs or something hourly
100
What does a scale factor determine?
How much a picture is being decreased or increased by.
Always involves multiplication or division
100
What does it mean for something to be proportional?
To be even, equivalent or change at the same rate
100
What are the two rules we have learned for negative numbers?
Same signs = add
Different signs = subtract
100
The sum of two numbers is 0. If one of those numbers are -1000, what is the other number?
1000
200
Mr. Smith worked for 10 hours and was paid $100 total. How much did he earn per hour?
$10 per hour
200
If the original picture is smaller and the new picture is larger, what is this called?
An enlargement
200
If a mosquito bit 5 people in an hour, is the mosquito's biting proportional?
Explain
No!
It wasn't per hour
200
Solve the following equation
-2 + 4 - ( - 6) =
8
200
The sum of two numbers is -100. If one of those numbers are -50, what is the other number?
-50
300
Louis writes a five page report with 250 words per page. How many words are in the report?
250 x 5 = 1250
300
If the original picture is bigger than the new picture, what is this called?
a reduction
300
192 students are in 4 buses, how many students are in each bus if the number of students are proportional?
48 students
y = 48x
300
-7/8 +1/2
-3/8
300
At 3:00PM the temperature in Pittsburg was 93°F. The temperature decreased at a rate of 2°F every 30 minutes. What was the temperature at 7:30PM?
77 degrees
400
Every cheeseburger costs 5 dollars. Make a table to show how much 2, 5 and 10 burgers would cost
Burger Price
2 10
5 25
10 50
400
The legs of triangle "A" are 6cm and 2 cm
The legs of triangle "B" are 12 cm and 4 cm
What is the scale factor?
2
400
X 3 6 9 12 15 18
Y 9 18 27 36 45 54
What is the constant of proportionality of this table?
Y = 3X
400
Show -1 + 2 on your white board by drawing a number line.
1
400
If the points -1.25 and 1.25 are plotted on a number line, what is one point that is exactly 3 units away?
-4.25 or 2.25
500
Irion wants to buy her son a new video game system that costs $450. She must also pay her rent which is $750. How many hours must she work if she wants to do both if Irion gets paid 15/hour?
450 + 750 = 1200/15 = 80 hours
500
A jet has a length of 242 feet. Which is a model of the jet built to a scale of 1 inch = 22 feet?
A. 10 inches
B. 11 inches
C. 12 inches
D. 13 inches
B. 11 inches
500
Which is the better deal?
12 car washes for $100
or
5 car washes for $45
Why? What is the cost?
12 is better
12 costs 8.3 each
5 costs 9 each
500
-1.5 +.5 - ( - 5.1) + 1
5.1
500
If the points -1.25 and 1.25 are plotted on a number line, what is the distance between those two points?