If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation? 1 10 10.8 14.4

Option B is correct.

Constant of variation is, k =10

Step-by-step explanation:

Direct Variation: A direct variation is a relationship between two variables in which one is a constant multiple of the other.

if y varies directly as x i.e,

then;          ......[1]  ; where k is the constant of variation.

Given: x =1.2 and y = 12

to solve fok

Substitute the values of x and y in [1]

Divide both sides by 1.2 we get;

Simplify:

10 = k

Therefore, the constant of variation is, 10

i do not know this sorry : (

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half