Answer:
(12,0), (3,-1), and (0,-4/3)
Explanation:
Just replace x and y in the equation with the coordinates.
12-9(0)=12
solve to see if it is true. First solve 9(0) which is 0. Which leaves us with 12-0=12 and this is true because it fits.
Now with (3,-1)
3-9(-1)=12
Solve to see if true. First solve 9(-1) which is -9. this leaves us with 3-(-9)=12
3-(-9) does equal 12 so this one is true as well.
Same thing with (0,-4/3)