Answer:
y<x+5
Explanation:
Inequalities are just like equations with equals signs.
Using that y intercept you use on the graph you can input it as b in the y=mx+b slope intercept equation.
On this line, the y-intercept is 5. If it were a regular equation with the slope of 1. m=1 and b=5 the answer would be y=x+5. The inequality doesn't do much when looking at the graph (besides the shading) so the inequality is y<x+5.