Answer is x ≤ 9
Step by step
Solve the inequality
-11 ≥ x - 20
add 20 to both sides to isolate x
-11 + 20 ≥ x -20 +20
Simplify
9 ≥ x
Swap x to the left side by flipping the sign
x ≤ 9
This means on the graph, your point is on the x axis at 9, your line is straight up and down because there is no y value.
Your line is solid (not dashes) because your inequality is less than or “equal” to so it includes the line.
Your shading goes to the left because x is “less than” or equal
The graph is included to show these details