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

Find x-intercepts

2x+4=0

x=-2

Find y-intercepts:

y=4

Plot these 2 points and draw a line.