Answer:
B ((2.-1), (5,3), (8, 7). (11.11 )}
Explanation:
Linear function:
The rate of change is always the same.
Item a:
x = 2 to x = 5 -> y = 1 to y = 3. Rate of change of 2/3.
x = 5 to x = 6 -> y = 3 to y = 7. Rate of change of 4.
Different rates of change, so not linear.
Item b:
We can look that for each point, when x changes by 3, y changes by 4, so the rate of change is the same and this set of points represents a linear function, and the answer is option b.