which is in the slope intercept form



Write it as



Start at 1 on the y-axis:



The slope is the .  From that green point draw a line
that goes up the numerator of the slope which is 2 units
('up' since it's positive), and then draw a line to the right 1 
unit, since the the denominator of the slope is 1, like the vertical
and horizontal green lines below:



Then get a ruler and draw a line from the point where you began 
to where you ended up:



Edwin