Answer:
Ok I will help because i'm the nicest person you'll ever meet lol Ok anyway
there will be no step by step explanation
Direction variation: and Not direction variation:
y= 3x
X= -1
and
Y= 4
now for the other one the non-direction---------------------> Y = (2/7)x
------------------------------------------------------------------------------> -0.5x = Y
------------------------------------------------------------------------------> Y= 2.2x + 7
TADA I'm finished and your welcome!!! :D