A sine function has the following key features: Frequency = 1/6π
Amplitude = 2
Midline: y = 3
y-intercept: (0, 3)
The function is not a reflection of its parent function over the x-axis. The first point must be on the midline and the second point must be a maximum or minimum value on the graph closest to the first point.

we got this form..

Step-by-step explanation:

y = A sin (Bx + C ) + D

A = the amplitude =  2

Bshows the number of periods in 2pi

The frequency  =  1/6pi   =  1 / periodso the period is 6pi

To find  "B"   we have      2pi / [ 6 pi ]  =  (1/3)

C = the phase shift..there is noneso "C" = 0

D = the shift up/downthe normal y intercept  for the sine is (0, 0)sothe shift up  = 3 unitssice the y intercept = (0, 3)

Sothe function is

y = 2sin (x/3) + 3

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

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