The graph of which function has an axis of symmetry at x = 3?

Therefore, the equation of this axis of symmetry is x = 3

Step-by-step explanation: Each of the parabolas in Figure 3 and Figure 4 can be expressed as a quadratic equation. The quadratic equation for the parabola in Figure 3 is x^2 + 4 x + 6. The quadratic equation for the parabola in Figure 4 is -x^2 + 6 x - 8.The graph of a quadratic function is a parabola. The axis of symmetry of a parabola is a vertical line that divides the parabola into two congruent halves. The axis of symmetry always passes through the vertex of the parabola .

the function makes a strait line horizontally with no x intercept but a y intercept at 9.