
Unit Rate and Constant of Proportionality
Presentation
•
Mathematics
•
7th Grade
•
Medium
+2
Standards-aligned
Jelisa Love
Used 16+ times
FREE Resource
3 Slides • 23 Questions
1
MATH STAAR REVIEW
7.4B- calculate unit rates from rates in mathematical and real‐world problems
7.4C- determine the constant of proportionality (k = y/x) within mathematical and real‐world problems
2
3
Multiple Choice
A ratio is a
comparison of two quantitities
a comparison of two quantities with units
a comparison of two quantities with units when the quantity in the denominator is 1
the number in front of the variable in an expression or equation
4
Multiple Choice
A rate is a ratio that compares
A part to a part
A part to a whole
Quantities with different units
Quantities with the same units
5
Multiple Choice
A unit rate is a rate in which the unit in the denominator is:
0
3
1
2
6
Multiple Choice
You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?
$8 per pound
$35 per pound
$5 per pound
$0.125 per pound
7
Multiple Choice
A store has 120 customers in 6 hours. What is the unit rate in customers per hour?
16 customers per hour
12 customers per hour
20 customers per hour
15 customers per hour
8
Multiple Choice
Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?
$.50 per pound
$1.25 per pound
$3 per pound
$2.50 per pound
9
Multiple Choice
If Antonia can type 408 words in 4 minutes, how many words can she type per minute?
408 words per minute
100 words per minute
400 words per minute
102 words per minute
10
Multiple Choice
It cost me $46.80 to fill my 13-gallon gas tank. What was the price of gas per gallon?
$3.60
$3.55
$3.40
$3.50
11
Multiple Choice
You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What was your unit cost per pizza?
$4.95 per pizza
$5.75 per pizza
$7.25 per pizza
$6.50 per pizza
12
Multiple Choice
A car is going 50 miles per hour. A rate that describes this would have units of
Miles and cars
Miles and hours
Miles only
Hours only
13
Multiple Choice
If Maya makes $10 an hour at her after school job, how many hours will it take her to earn $150?
10 hours
1.5 hours
15 hours
20 hours
14
Multiple Choice
After 3 hours, Ernie had travelled 195 miles. If he travels at a constant speed, how far will he have travelled after 5 hours?
400 miles
325 miles
575 miles
650 miles
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​https://youtu.be/0Y0blHsu-wM?si=N4LhPJMvRnCHX4aj
16
Multiple Choice
Determine the constant of proportionality for the table. Express your answer as y = kx
y = 1/2x
x = 1/2y
y = 2x
k = x
17
Multiple Choice
Determine the constant of proportionality for the table. Express your answer as y = kx
y = 30k
y = 30x
y = 0.03x
y = 9x
18
Multiple Choice
Determine the constant of proportionality for the table. Express your answer as y = kx
15k
x = 15y
y = 0.06x
y = 15x
19
Multiple Choice
20
Multiple Choice
21
Multiple Choice
Identify the constant of proportionality.
k = 2x
k = 2
k = 4
none (not proportional)
22
Multiple Choice
Identify the constant of proportionality.
k = 6
k = 12
k = 1/6
k = 1/12
none (not proportional)
23
Multiple Choice
Identify the constant of proportionality.
k = 5
k = 1/5
k = 1
k = 2.5
none (not proportional)
24
Multiple Choice
Identify the constant of proportionality.
k = 2
k = 3
k = 1.50
k = 2/3
none (not proportional)
25
Multiple Choice
26
Multiple Choice
MATH STAAR REVIEW
7.4B- calculate unit rates from rates in mathematical and real‐world problems
7.4C- determine the constant of proportionality (k = y/x) within mathematical and real‐world problems
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