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/...
The vertex of a quadratic function (which is in U shape) is where the function has a maximum value or a minimum value. The axis of symmetry of the quadratic function intersects the function (parabola) at the vertex.Quadratic Functions Formula...
The axis of symmetry is defined byx=−b2ax=−b2a. If we use the quadratic formula,x=−b±√b2−4ac2ax=−b±b2−4ac2a, to solveax2+bx+c=0ax2+bx+c=0for thex-intercepts, or zeros, we find the value ofxhalfway between them is alwaysx=−b2ax=−b2a, the equation fo...
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...
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 ...
Discriminant b2−4ac y-Intercept The point where the quadratic curve cuts the y-axis (0,c) Vertex (Turning Point) (−b2a,−b24a+c) Equation of axis of symmetry x=−b2a Minimum / Maximum Value ifa>0, quadratic curve will have minimum value and parabola opens up ...
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 ...
Quadratic Formula Calculator Completing the Square Completing Square Calculator The Discriminant Parabola Axis of Symmetry Focus and Directrix Online Parabola Grapher Standard and Vertex Equations Convert Standard to Vertex Form Real World Applications Intercepts Inverse of Parabola (Square ro...
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. ...
2. Axis of Symmetry: the same as completed squared form , i.e.3. Open direction: the same as beforeREMARK: To graph a quadratic function, DO 1-3 (and 4 if necessary)Example 5Exercise 6Exercise 74. Intercepts a) y-intercept: the same as before b) x-intercept: by finding out h ...