124k views
5 votes
Suppose that y is directly proportional to x and that y = 16 when x = 8. Find the constant of proportionality k.

Then, find y when x = 12.

User Nawal
by
8.2k points

1 Answer

6 votes

Answer: 24

Explanation:

Variation: y ∞ x

y = kx , where k is the constant of proportionality

now to find k, we substitute for y and x in the equation above

16 = 8k

therefore,

k = ¹⁶/₈

= 2.

Now, to find y , we move back to the equation above and substitute for x and k to get y

y = 12(2)

= 24

User Teena Nath Paul
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories