The time is took Tayna to complete different sets of math problems varied directly with the number of problems in the set Tayna'

Question

3 years ago

11

The time is took Tayna to complete different sets of math problems varied directly with the number of problems in the set Tayna'

s data is shown in the table. If x = time, and y = the number of problems in the set, which equation models Tayna's direct variation
A. y = 12x
B. y = 1.2x
C. y = x divided by 12
D. y = x divided by 1.2

Mathematics

1 answer:

Vsevolod [243] · Answer 1 · 2022-06-10T07:05:30+03:00

Vsevolod [243]3 years ago

3 0

Answer:

C

Step-by-step explanation:

time is directly proportional to the number of problems in the set

=> x = ky

k = constant of proportionality

when k = 12

x = 12y

by making y the subject, we divide both sides by 12

=> y = x/12