Which linear inequality is represented by the graph

(3,-0.3),(0,-1.3)
slope = (-1.3 - (-0.3) / (0 - 3) = (-1.3 + 0.3) / -3 = -1/-3 = 1/3

y = mx + b
slope(m) = 1/3
use either of ur points...(3,-0.3)...x = 3 and y = -0.3
now sub and find b, the y int
-0.3 = 1/3(3) + b
-0.3 = 1 + b
-0.3 - 1 = b
-1.3 = b
so an equation would be : y = 1/3x - 1.3

so the line is a solid linemeaning there is no equal sign...and it is shaded below the linemeaning it is less then

so ur inequality is : y < 1/3x - 1.3 <===

Sure. 9 is one of the square roots of 81. (The other one is -9.)