Answer:
The answer to your question is letter C
Explanation:
Process
1.- Find two points of the dotted line
 A (0, 4)
 B (3, 5)
2.- Find the slope of the line
 

Substitution
 

 

3.- Write the equation of the line
 y - y1 = m(x - x1)
 y - 4 = 1/3(x - 0)
 y - 4 = 1/3x
 y = 1/3x + 4
4.- Write the inequality
 We are interested on the upper area so
 y > 1/3x + 4