Question

Kimi’s dog gives birth to a litter of 4 puppies per year, on average. The relationship between time and the expected total number of puppies is shown on the graph. Which other ordered pairs would fall on this line? Select all that apply.
(0, 0)
(2, 6)
(3, 12)
(4, 14) On a coordinate plane, a graph has number of years on the x-axis and number of puppies on the y-axis. A line goes through points (0, 0), (1, 4), (3, 12).

Answer 1

The line has slope 4 (4 puppies per year) so the equation is y = 4x. Check each pair:

- (0, 0): 0 = 4·0 — yes.
- (2, 6): 6 ≠ 4·2 (8) — no.
- (3, 12): 12 = 4·3 — yes.
- (4, 14): 14 ≠ 4·4 (16) — no.

So (0, 0) and (3, 12) lie on the line.