Question

Please help! Will give Brainiest!
Suppose y varies directly with x. Write an equation relating x and y.
y= 12 when x=4

options:

1. y= 4x

2. y= -3x

3. y= 3x

4. y= 1/3x

Answer 1

3. y=3x

y=3x
12=3(4)
12=12

Answer 2

1.  12 = 4(4) ----> 12 = 16

2. 12 = -3(4) ------>12 = -12

3. 12 = 3(4) -------->12 = 12

4. 12 =  1/3(4) --------> 12 =  4/3