Y is directly proportional to x. When y=30, x=6. What is the value of y when x= 12

The value of y when x = 12 is equal to 60.

Step-by-step explanation:

Since, y is directly proportional to x, then it can be written as follows.

y ∝ x

y = kx                                 ... (1)

It is given that when y =30 and x = 6 then y is directly proportional to x.

Substitute 30 for y and 6 for x in equation (1) as follows:

30 = k(6)

k =  

k = 5

To obtain the value of y if x = 12, then substitute 12 for x and 5 for k in equation (1) as follows:

y = 5(12)

y = 60

Therefore, the value of y when x = 12 is equal to 60.

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really really sorry if i'm

-12 -5(x + 4) = 3x

-12 - 5x - 20 = 3x

-12 - 20 - 5x = 3x

-32 - 5x = 3x

    + 5x   + 5x

-32 = 8x

8         8

- 4= x

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.