1. Plot the graph for the equations.
y = ¼X
y = -¼X
You will see that they are in different directions as they have opposing slopes; +¼ and -¼.
You will also see that they both passes through the origin (0,0) and this is called the invariant point.
2. Plot the graph for the equations.
y = 4x
y= 4x - 2
To find x intercepts, replace y with 0 and solve for x.
You will see that both lines are parallel as they have the same slope (4). The y-intercept for the first equation is 0 while the second one is -2.
3. Put the equation is a more readable format:
2x - y = -4
y= 2x + 4
Plot these 2 points and draw a line.