Answer the following questions.
(a) Is the change in the inputs, x, the same?
(b) Is the change in the outputs, y, the same?
(c) Is the function linear?
(1)
x y
-3 ................................ 8
-2 .............................. 11
-1 .............................. 14
0 ................................ 17
2 ................................ 20
3 ................................ 26
(2)
x y
20 .......... 11.8
30 .......... 24.2
40 .......... 36.6
50 .......... 49.0
60 .......... 61.4
70 .......... 73.8
80 .......... 86.2