Question

Which table represents a quadratic function? A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 6, 3, 2, 3, 6. A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries negative 5, negative 3, negative 1, 1, 3. A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries negative 9, negative 4.5, 0, 4.5, 9. A 2-column table with 6 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 0.25, 0.5, 1, 2, 4.

Answer 1

That is the first table, A.

Explanation:

Answer 2

9514 1404 393

Answer:

A

Explanation:

The attachment shows the tables and their respective first- and second-differences. The quadratic function is the one with non-zero constant second differences. That is the first table, A.

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Tables B and C are linear functions. Table D is exponential.

Table A has the equation ...

f(x) = x^2 +2