328,396 views
21 votes
21 votes
The value of Y varies directly with X, and Y = 50 when X = 18. What is the value of Y if X = 9?

help!!

User TAbdiukov
by
2.7k points

1 Answer

8 votes
8 votes

Answer:

Y = 25

Explanation:


y \: varies \: diretly \: with \: x \\ y = kx \\ 50 = 18k \\ k = 50 / 18 \\ k = 2.78 \\ \\ y = kx \\ y = 2.78 * 9 \\ y = 25.02

User Mhucka
by
3.0k points