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Which function has a vertex at (2,6)

Which function has a vertex at (2,6)-example-1
User Vapurrmaid
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1 Answer

4 votes

Answer:

B, f(x) = 2|x - 2| + 6

Explanation:

the functions shown have vertical stretches, horizontal shifts, and vertical shifts as a transformation

we do not need to focus on the stretch, and moreso the shifts

the horizontal shift takes place on the x-axis and it is written with the parent function (in this case the parent function is |x|). when the shift is negative (ex: x -2), this means that the x-coordinate would be positive. if the shift is positive (ex: x + 2) the x-coordinate would be negative

the vertical shift takes place on the y-axis and unlike the horizontal shift, is written on the outside of the parent function, like the +6 and -6 in each of the functions we are given. when a shift is positive (ex: +6), the y-coordinate is positive and when a shift is negative (ex: -6) the y coordinate is negative

using this information, we can see that 2|x - 2| + 6 fits this criteria, as we have a positive vertex

therefore the answer is B, f(x) = 2|x - 2| + 6

User Guilherme Meireles
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