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Answer:
A
Step-by-step explanation:
y = 2.5x - 1.5
x y
2 3.5
3 6
4 8.5
5 11
The function is linear for one thing, because it does have a constant rate of change.
6 - 3.5 = 2.5
11 - 8.5 = 2.5
D is incorrect. because it is linear.
C is incorrect because it does have a constant rate of change.
B is wrong because any 1 input gives only one output
A is your answer.