Question

Which parent function is represented by the table?

O A. f(x) = Ixl
B. f(x) = 2x
C. f(x) = x²
D. f(x) = x
x y
-2 -2
-1 -1
0
1
0
1
2 2

Answer 1

D. f(x) = x

Explanation:

You want the parent function described by a table that has its y-values equal to its x-values.

Table

We observe that each row of the table has the same value in the y-column as in the x-column. That is, ...

y = x

Written using function notation, this is ...

f(x) = x

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