Answer :

you have to change all the equations to y=... to be able to graph them.
AL2006
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.