Q. Find the equation of the axis of symmetry of the following parabola using graphing technology.y=−x2+8xAnswer:
Identify Coefficients: The equation of a parabola in the form y=ax2+bx+c can have its axis of symmetry found using the formula x=−2ab. Let's identify the coefficients a and b from the given equation y=−x2+8x. a=−1 (coefficient of x2) b=8 (coefficient of x)
Find Axis of Symmetry Formula: Now, we will use the formula x=−2ab to find the axis of symmetry.Substitute the values of a and b into the formula:x=−2×−18
Substitute Values: Perform the calculation:x=−2−8x=4
Perform Calculation: The equation of the axis of symmetry is a vertical line passing through the x-coordinate we found. Therefore, the equation of the axis of symmetry is x=4.
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