Question

in the graph of the following piecewise function, which coordinate point will have a closed circle?

f(x) = { 3x + 6 if x > 3
1/3 x - 2 if x ≤ 3}

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Answer 1

3, -1

Explanation: At x = 3 use the piece with x ≤ 3: f(3) = (1/3)(3) − 2 = −1, so the closed dot is at (3, −1).