Advanced Math practice question

Answer: 13

f(x) = a(x − 3)² − 5. From f(5) = 3: 4a − 5 = 3, so a = 2. Then f(0) = 2(9) − 5 = 13.

Common wrong answers

If you answered 4

4 uses a = 1 without checking the point (5, 3).

If you answered 23

23 adds 5 instead of subtracting.

If you answered -5

−5 is the vertex's y-value, not f(0).

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