Answer:
y= -4x + 2
Explanation:
First, I usually look for the y-intercept. In this case, it's a positive 2. Then, look for any point that touches an intersection on the coordinate plane. Use RISE/RUN, and go up 4, to the left one, Since you went left, it's a negative slope. The put your info together!
I hope this makes sense... Ask for any more help if you need it!