What is the equation for the axis of symmetry of a quadratic function y = 3x² + 6x + 2? A. x = -1 B. x = -2 C. x = -3 D. x = -4 相关知识点: 试题来源: 解析 A。解析:For the function y = 3x² + 6x + 2, a = 3 and b = 6. Using the formula x = -b/...
If our function is in the form of y=ax² + bx + c then vertex of the parabola The line passing through vertex and parallel to the y-axis is called the axis of symmetry. The parabolic graph of a quadratic function is symmetrical about axis of symmetry. f(x) has a minimum value at...
The vertex of a quadratic function (which is in U shape) is where thefunctionhas a maximum value or a minimum value. Theaxis of symmetryof the quadratic function intersects the function (parabola) at the vertex. Quadratic Functions Formula A quadratic function can always be factorized, but the...
graph aquadratic functionif it is expressed in the vertex-axis form. Graphing a quadratic function Thevertex is the pointat (2, 4) The axis of symmetry is the verticalline x= 2 Graphing a quadratic function y = 2(x+3)^2 − 5 ...
Additional Information Discriminant b2−4acb2−4ac y-Intercept The point where the quadratic curve cuts the y-axis (0,c)(0,c) Vertex (Turning Point) (−b2a,−b24a+c)(−b2a,−b24a+c) Equation of axis of symmetry x=−b2ax=−b2a ...
Axis of symmetryThe quadratic formula learned by generations of math students is difficult to remember, but it can be used to solve quadratic equations where y = 0. Solving the equation gives the two points where the parabola crosses the x-axis (the two values of x when y = 0):What ...
(iv)Axis of symmetry Go (v)Vertex Go Plot the parabolay = f(x). Go Calculate the discriminant off(x) = 0. Go Calculate the number of roots off(x) = 0. Go Quadratic Equations Solving equations is the central theme of algebra. All skills learned lead eventually to the ability to sol...
Anaxis of symmetry (also known as a line of symmetry) will divide the parabola into mirror images. Theline of symmetryis always a vertical line of the formx=n, wherenis a real number, and its axis of symmetry is the vertical linex=0. ...
The axis of symmetry is defined by x=−b2a.x=−2ab. If we use the quadratic formula, x=−b±b2−4ac2a,x=2a−b±√b2−4ac, to solve ax2+bx+c=0ax2+bx+c=0 for the x-intercepts, or zeros, ...
Plugging into the parabola formula-0.1000forxwe can calculate they-coordinate : y = 5.0 * -0.10 * -0.10 + 1.0 * -0.10 - 6.0 ory = -6.050 Parabola, Graphing Vertex and X-Intercepts : Root plot for :y = 5x2+x-6 Axis of Symmetry (dashed){x}={-0.10} ...