Find the equation of the axis of symmetry for the parabola y=x2−4x. Simplify any numbers and write them as proper fractions, improper fractions, or integers._____
Q. Find the equation of the axis of symmetry for the parabola y=x2−4x. Simplify any numbers and write them as proper fractions, improper fractions, or integers._____
Identify Coefficients: Identify the coefficients of the quadratic equation.The given parabola is in the form y=ax2+bx+c. For the equation y=x2−4x, we can compare it to the standard form and identify the coefficients as follows:a=1 (coefficient of x2)b=−4 (coefficient of x)c is not needed for finding the axis of symmetry.
Use Axis of Symmetry Formula: Use the formula for the axis of symmetry.The axis of symmetry for a parabola in the form y=ax2+bx+c is given by the formula x=−2ab. We will substitute the values of a and b into this formula to find the axis of symmetry.
Substitute Values: Substitute the values of a and b into the formula.Using the values from Step 1, we have:a=1b=−4Now, substitute these into the formula:x=−(−4)/(2⋅1)
Simplify Expression: Simplify the expression to find the axis of symmetry.x=2⋅14x=24x=2The axis of symmetry is therefore the line x=2.
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