Determine which function(s) is not a linear function. select all that apply.

x=3

Step-by-step explanation:

By vertical line test, x=3 fails because more than 2 points have the same x value. Functions must pass the vertical line test.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3