Find the Unit Rate
Addition/Subtraction
Vocabulary
Hodge Podge
100
80 inches of snow over 10 days
8 inches of snow per day
100
12 + (-6)
6
100
The place on a grid where the axes meet, (0,0)
Origin
100
Is this a proportional relationship? Explain
No, it is not a straight line and it does not go through the origin.
200
k=3/4
200
− 5 + (− 4)
-9
200
When a shape is made proportionally larger, a scale factor greater than 1 is applied.
Enlargement
200
When Leroy went to bed, the temperature was −2°F. He needed his electric blanket to keep warm! By morning, the temperature had risen by 9°F. What is the new temperature?
7°F
300
30 chairs for 2 rows
15 chairs per row
300
2.2+(−2.5)
-0.3
300
the ratio that shows how much a figure or object is enlarged (made larger) or reduced (made smaller)
Scale Factor
300
6/5 + (-1/10)
11/10
400
480 hours in 12 weeks
40 hours per week
400
-3/7 + 4/7
1/7
400
the value that, when added to the original number, results in a sum of zero... the opposite of a number.
Additive Inverse
500
A movie theater charges the same price for every ticket. The total cost is represented by the equation: y=9.50x where x is the number of tickets and y is the total cost in dollars. What is the unit rate?
$9.50
500
−21.52−(−8.86)
−12.66
500
When a shape is made proportionally smaller, a scale factor less than 1 is applied.
Reduction
500
A machine produces 480 gel pens per hour. Which equation represents the number of gel pens, p, produced in m minutes?
p= 8m