Advanced Math practice question

Answer: 8

The x-intercepts are at x = 1 and x = 5 (base 4). The vertex is at x = 3, where y = −9 + 18 − 5 = 4 (height 4). Area = (1/2)(4)(4) = 8.

Common wrong answers

If you answered 4

4 is the height, or the base, alone.

If you answered 12

12 uses a base of 6 (the sum of the intercepts).

If you answered 16

16 forgets the 1/2.

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