When two lines are parallel, that means they have the same slope!
The slope is the coefficient of x
In the equation y = 3x, the slope is 3
An example of a line that is above y = 3x is ...
y = 3x + 2
The "+2" shifts the line up by 2 on the y axis
An examples of a line that is below y = 3x is ...
y = 3x - 3
The "-3" shifts the line down by 3 on the y axis
