Question

Which of the ordered pairs below could NOT be in this function? {(1, 2), (2, 3), (3, 4), (4, 5)}

(1, 0)
(5, 6)
(0, 1)
(5, 5)

Answer 1

We only need 2 points to identify a linear function. They gave us four. The function is. Y=x+1. The point that's NOT on that line is (1,0).

Answer 2

In order for something to be a function, it cannot have an x-value repeated. Therefore, (1,0) cannot be a possible ordered pair because the function already has a point at x=1 (1,2).