Decide whether each of the following points is on the line . For each point, show your work or explain how you decided. a. (0, 1) b. (1, 0) c. (– 40, 21) d. (20, –11)

Iwould like to think so. what’s the question you need with?

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.