Question

Which is a linear function
(0,3),(1,5),(2,7),(3,9)
(1,16),(2,8),(3,4),(4,2)

Answer 1

Explanation:

Both are linear functions.

Look at the first one: (0,3),(1,5),(2,7),(3,9). Notice how x increases by 1 consistently as we go from left to right. Simultaneously, y increases by 2 consistently. The slope of the line through these points is 2.

The same applies to the second set of points: x increases by 1 from every previous value; y is halved (multiplied by 1/2). The slope of this line is -1/2.