Question 672217
2y<4

First the equality
2y=4
y=2

It is a line parallel to the x axis

The equality

{{{drawing(300,300,-10,10,-10,10,graph(300,300,-10,10,-10,10,y=2))}}}

Since y is < than something the line will be dotted one.the shaded portion will be below the line

The inequality
{{{drawing(300,300,-10,10,-10,10,graph(300,300,-10,10,-10,10,2y<4))}}}