Answer:
Step-by-step 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.
