You have selected the "Graph" tab so the solution is the area highlighted in red.

First, the line "y = 2x + 1" is plotted by putting values for "x":

For "x = 0", we have "y = 1"

For "x = 1", we have "y = 3"

So, we plot a line that goes through (0, 1) and (1, 3).

Then we need to decide which area is the answer to by picking up point from one side (above or bellow the line):

So, for "x = 0" and "y = 0" (point bellow the line) plugged into "y<2x+1" we get:

0 < 2*0 + 1 

0 < 1 which is true statement

Thus the solution is the are bellow the line highlighted in red: