For each one . . .
=> solve the
equation for 'y'. That means massage it around until it's
in the form
of y = (thing1) x + (thing2).
=> When you do that, then 'thing1'
is the slope of the line on the graph,
and 'thing2' is the number
where the line crosses the y-axis.
=> When you have those two
numbers, drawing the line on the graph
is a piece-o-cake.