For the graph of the function, identify the axis of symmetry, vertex and the formula for the function.


Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 + x – 1


Axis of symmetry: x = –0.5; Vertex: (–0.5, –0.75); f(x) = –x2 + x – 1


Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 – x – 1


Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 + 2x – 1

For the graph of the function identify the axis of symmetry vertex and the formula for the function Axis of symmetry x 05 Vertex 05 075 fx x2 x 1 Axis of symmet class=

Respuesta :

The answer is A because the axis of symmetry is in between 0 and 1, the vertex lies on 0.5 and -0.75, and the parabola opens down so the coefficient of a is -1, and the y-int or the value of c is -1

The vertex of the function is [tex]\boxed{\left( {0.5, - 0.75} \right)}[/tex] axis of symmetry is [tex]x = 0.5[/tex] and the formula for the function is [tex]\boxed{ - {x^2} + x - 1}.[/tex] Option (a) is correct.

Further Explanation:

Given:

Calculation:

The standard form of the parabola is shown below.

[tex]\boxed{y = a{{\left( {x - h} \right)}^2} + k}[/tex]

Here, the parabola has vertex at [tex]\left({h,k} \right)[/tex] and has the symmetry parallel to x-axis and it opens left.

The general form of the parabola can be expressed as follows,

[tex]y = a{x^2} + bx + c[/tex]

The graph is a downward parabola.

From the graph it has been observed that the vertex of the parabola is

[tex]\left( {0.5, - 0.75} \right).[/tex]

Symmetry of the graph is [tex]x = 0.5.[/tex]

The [tex]y[/tex]-intercepts of the graph is [tex]-1.[/tex] Therefore, the value of [tex]c[/tex]is [tex]-1.[/tex]

The value of [tex]a[/tex] is -1 as the graph is a downward parabola.

The vertex of the function is [tex]\boxed{\left( {0.5, - 0.75} \right)}[/tex] axis of symmetry is [tex]x = 0.5[/tex] and the formula for the function is [tex]\boxed{ - {x^2} + x - 1}.[/tex] Option (a) is correct.

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Answer details:

Grade: High School

Subject: Mathematics

Chapter: Conic sections

Keywords: vertex, symmetry, symmetric, axis, y-axis, x-axis, function, graph, parabola, focus, vertical parabola, upward parabola, downward parabola.