SOLUTION: I really could use your help: I need to know whether these are linear or quadratic: 1. if x is 1 f(x) is 8, if x is 2 f(x) is 11, if x is 3 f(x) is 14, if x is 4 f(x) is 17, if

Question 459903: I really could use your help:
I need to know whether these are linear or quadratic:
1. if x is 1 f(x) is 8, if x is 2 f(x) is 11, if x is 3 f(x) is 14, if x is 4 f(x) is 17, if x is 5 f(x) is 20.
2.if x is 1 f(x) is 8, if x is 2 f(x) is 9, if x is 3 f(x) is 11, if x is 4 f(x) is 14 if x is 5 f(x) is 18.
3. f(x) = 3x
4. f(x) = (x-3)^2 -6
Thanks so much for your help!
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!

1) and 2) plot them on a graph
3) linear
4) quadratic
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