What the heck??? I do not understand this at all...!!!

It's (a).

Step-by-step explanation:

Y ≥ 1:

The line y = 1 is a horizontal passing though  the point on the y axis where y = 1 and y  ≥ 1 is the area above this line,. The area is shaded above this line,

Y  ≥ x - 1:

The line  y = x - 1 is a line which rises to the right with gradient 1 and which passes through the point (0, -1) on the y axis. Y  ≥ x - 1  is the area above the line and is shaded.

The combination of these 2 inequalities gives us diagram (a). The shaded part satisfies both inequalities.

is there a picture

step-by-step explanation: