Question 1)k = 6
O A x = 6y
О В 6 = ух
O C y = 6x
O D y = 1/6x

If the given equation is

comparing with

Therefore, the option is correct.

Step-by-step explanation:

Given

We know when varies directly with , means that when x increases, y increases by the same factor

i.e.

y ∝ x

where k is the 'constant of proportionality.

If the given equation is

comparing with

Therefore, the option is correct.

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4