Constant Proportionality from Tables
Constant of Proportionality from Graphs
Constant of Proportionality from Words
100

Drew paints portraits.  Find the constant of proportionality if it is a proportional relationship 

Time (in hours) = x             Number of portraits = y

           1                                          5

           2                                          10

           3                                          15

           4                                          20


5 portraits per hour

100

Find the constant of proportionality with correct units

k =46 miles per hour

100

Morgan bought 24 batteries packed in 6 equal packs. What is the unit rate per pack?


Morgan compró 24 baterías empaquetadas en 6 paquetes iguales. ¿Cuál es la tarifa unitaria por paquete?

4 batteries per pack

200

The table shows the amount earned by Harry for selling ice cream.  Find k.


Cups Sold = x              3         5        7         9

Earnings ($)  = y         12        20      28       36


CoP = 4

200

What is K with proper units?

k = 1.2 miles per hour

200


Julie brought 5 pounds of cans to a recycling place and was paid $2. Find the constant of proportionality (cost per pound)

Julie llevó 5 libras de latas a un lugar de reciclaje y le pagaron $2. Encuentre la constante de proporcionalidad (costo por libra)

$0.40/pound

300

Fred wrote notes during an exam.  Find the CoP (with correct units) if it is a proportional relationship.


Notes (pages)        8             9               10            11

Time (in hours)      18           19              20            21

It is not proportional, there is no CoP. 

300

Find the constant of proportionality with correct units

5 gallons per min

300

To make juice, Michael combines 4 liters of water and 12 scoops of juice mix. What is the CoP (scoops per liter)?

3 scoops per liter

400

A ferry transports bikes to an island.  Write k (which is the CoP). 


Number of bikes (x)              10             12             14            

Number of trips (y)              5                6               7              

k = 0.5

400

Find k with proper units.

k = 3 gallons per minute

400

Zachary's time machine needs 14 megawatts of electricity to travel back 7 years.  What is the unit rate (megawatts per year)?

La máquina del tiempo de Zachary necesita 14 megavatios de electricidad para viajar 7 años atrás. ¿Cuál es la tarifa unitaria (megavatios por año)?

 2 megawatts per year

500

Alice bought comics.  Find the k (CoP with correct units) if the table shows a proportional relationship.


Number of comics             2             4             6            

Price (dollars)                   6            12            18           


k = 3 dollars per comic

500

Find the constant of proportionality with correct units

60 miles per hour

500

An item that is 4 feet long is 48 inches long.   What is the unit rate per foot?

Un artículo que mide 4 pies de largo mide 48 pulgadas de largo. ¿Cuál es la tasa unitaria por pie?

 12 in per foot

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