Question

If xx and y are in direct proportion and y is 7 when x is 14, find y when x is 12.

a) 6
b) 7
c) 5
d) 8

Answer 1

To find y when x is 12 in a direct proportion, set up a proportional equation using the given information. The value of y when x is 12 is 6. So, the correct answer is (a) 6.

Step-by-step explanation:

To find the value of y when x is 12, we can set up a proportional equation using the given information:

Since x and y are in direct proportion, we can write the equation:

x / y = k

Substituting the given values, we have:

14 / 7 = k

k = 2

Now, we can use the value of k to find y when x is 12:

12 / y = 2

y = 6

Therefore, the value of y when x is 12 is 6. So, the correct answer is (a) 6.