133k views
0 votes
If y is directly proportional to x and y = 11 when x = 6 , what is the value of y when x = 9

User WaTeim
by
8.9k points

1 Answer

5 votes
Since we are given that y is directly proportional to x and that when y = 11, x equals 6, we can set up a proportion. Before doing that however, we need to note that the question is asking for the value of y when x = 9. Here is the equation:

(11)/(6) = (y)/(9)
Now, just cross multiply and solve for y to get a value of 16.5. Therefore, the value of y when x = 9 is 16.5. Hope this helped and have a phenomenal day!
User John Duff
by
8.2k points