Question

Choose the representations or descriptions that model the relation provided in each item. For each relation, select all situations that apply.

x -2 0 2 4
f(x) 4 0 4 16


a The relation is a function.
b f( x) = -2 x
c f(4)= -2
d domain: {-2, 0, 2, 4}
e The relation is not a function.
f f( x) = x2

Answer 1

It is B and D because it is the only one that matches the input and outputs. D shows a perfect graph of the points while B shows the points themselves. They cannot be a linear function since they are not linear so it is not E or F.