1.- I'll write the inequality as an equation
y = x
2.- I'll asign values to x to get y
x y
-2 -2
-1 -1
0 0
1 1
2 2
3.- I'll sketch the line, hold on
4.- Join the points and shade the area
The red line must be dash but the solution is the dash line and the green area.
Becuase the inequality is y < x, the sign "<" means below the line (shade the area below the line)
If the sign would be ">" it would mean shade the area over the line