Answer:
y=-3x+3
Explanation:
1: subract one of the y from the other one 0--3, or 0+3=3
2: Do the same with the x of the right y 1-2=-1
3: put the solution to the y over the solution to the x 3/1-
4: simplify -3
5: write out what you now know y=-3x+b
6: fill in y and x with one of the points -3=-3(2)+b
7: Solve
a) Combine like terms -3=-6+b
b) add 6 to both sides 3=b
8: write out the problem with everything you know y=-3x+3