Question

If x varies directly with y and y=12 when x=4,what is the value of y when x=-3​

Answer 1

The answer will be -9 as 12 is obtained by multiplying 3 by 4 whereas multiplying-3 by 3 will give us -9.

Answer 2

-9

Explanation:

If x varies directly with y, we can write an equation like: x = ky, where k is some constant. We want to solve for k first, so let's use the given numbers of y = 12 and x = 4:

x = ky

4 = 12k

k = 1/3

Now, our equation looks like this: x = (1/3)y. We want to find the value of y when x = -3, so plug -3 in for x:

x = (1/3)y

-3 = (1/3)y

y = -9

Thus, the answer is -9.

Hope this helps!