Answer
Three additional points on the graph can be:
$(-1,5)$
$(0,7)$
$(1,9)$
Work Step by Step
If we interpret the slope, we can say that if $m=2$, then for every $1$ unit increase in $x$, $y$ increases by $2$ units. Using that, we can calculate more points on the line.
The starting point is given $(-2,3)$, after that, we have to add the aforementioned changes to the x and y-coordinates.
Next point can be:
$(-2+1,3+2)=(-1,5)$
Now, starting with $(-1,5)$ we add the changes again:
$(-1+1,5+2)=(0,7)$
Now, starting with $(0,7)$ we add the changes again:
$(0+1,7+2)=(1,9)$
