SOLUTION: If y varies directly as x and y = 6 when x = 2, find y when x = 5. A. 5/3 B. 2.4 C. 15 D. 6

Algebra ->  Test -> SOLUTION: If y varies directly as x and y = 6 when x = 2, find y when x = 5. A. 5/3 B. 2.4 C. 15 D. 6      Log On


   

Question 436241: If y varies directly as x and y = 6 when x = 2, find y when x = 5.
A. 5/3
B. 2.4
C. 15
D. 6
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

*Note: When Quantities vary directly,they are related by the relationship:

 y+=+%28kx%29 k being  the constant of proportionality.

If y varies directly as x and y = 6 when x = 2, find y when x = 5

   y = kx

   6 = k2

   3 = k

 y = 3*5 = 15 when x = 5