Charla wants to determine the vertex of the function f (x) = x2 - 18x + 60 by changing the function into vertex form. Which statement about the vertex of the function is true?

The x-coordinate of the vertex is greater than the y-coordinate.

The x-coordinate of the vertex is negative.

The y-coordinate of the vertex is greater than the y-intercept.

The y-coordinate of the vertex is positive

Question

Mathematics

Terrance Donovan

8 April, 13:52

Charla wants to determine the vertex of the function f (x) = x2 - 18x + 60 by changing the function into vertex form. Which statement about the vertex of the function is true?

The x-coordinate of the vertex is greater than the y-coordinate.

The x-coordinate of the vertex is negative.

The y-coordinate of the vertex is greater than the y-intercept.

The y-coordinate of the vertex is positive

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Answers (1)

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Hartman · Answer 1

In form y=ax^2+bx+c x coordinate is - b/2a ycoordiante is found by plugging in that x value into equation y=x^2-18x+60 a=1 b=-18 xcoordainte = - (-18) / 2 (1) = 18/2=9 plug back y=9^2-18 (9) + 60 y=81-162+60 y=-21 xvalue is - 18 yvaue is - 21 - 18>-21 first one