The value of angle y in the diagram is 119°. ( option C).
The sum of angles on a straight line is 180°. This means that these angles are supplementary.
Therefore, let's name the interior angles as a,b,c
133 + a = 180
a = 180 - 133
a = 47°
b + 108 = 180
b = 180 - 108
b = 72°
Using the exterior angle theorem
a+b = y
y = 47 + 72
y = 119°
Therefore, the value of y in the diagram is 114°