What is the vertex of the parabola given by: f(x)=x^2-18x+81

1 Answer | Add Yours

justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

The equation of the parabola is f(x) = x^2 - 18x + 81. The x-coordinate if the vertex is 18/2 = 9

f(9) = 81 - 162 + 81 = 0.

The vertex is (9, 0)

We’ve answered 318,946 questions. We can answer yours, too.

Ask a question