解析 B。对于二次函数的顶点式 y = a(x - h)^2 + k,其对称轴为 x = h。在函数 y = -2(x + 1)^2 - 3 中,h = -1,所以对称轴为 x = -1。选项 A,x = 1 不符合;选项 C,x = 3 不符合;选项 D,x = -3 不符合。反馈 收藏 ...
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/...
Axis of Symmetry, Axis of Symmetry Definition, What is axis of symmetry? Axis of symmetry formula, Axis of symmetry equation, How to find axis of symmetry?
试题来源: 解析 A。对于二次函数 y = ax² + bx + c,对称轴公式为 x = -b/2a,在 y = 2x² - 4x + 3 中,a = 2,b = -4,代入公式可得 x = -(-4)/(2*2)=1。B、D 选项不符合对称轴公式。C 选项不是该函数对称轴。反馈 收藏 ...
So the x-coordinate of the vertex is the equation of the axis of symmetry. The standard quadratic function can be represented as: f(x)=ax2+bx+c,a≠0 And The equation of the axis of symmetry can be determined by the following formula: ...
I believe x=-b/2a is the axis of symmetry, not y=-b/2a, as you explain. Report 01/10/14 Steve S. One way to remember this is with the Quadratic Formula: x = (-b±√(b^2-4ac))/2/a = -b/2/a ±√(b^2-4ac))/2/a The roots are equal distances from the value x ...
百度试题 结果1 题目 7. Given x =4 is the axis of symmetry of the graph of the quadratic function f(x) =7 + 8x-x2,determine the coordinates of the maximum point. 相关知识点: 试题来源: 解析 (4 , 23) 反馈 收藏
How to Find the Axis of Symmetry From the General Form of the Equation of a Parabola Step 1:Determine theaandbvalues from the general form of the quadratic equation that we are given. Step 2:Substitute theaandbvalues into the equation {eq}x=\dfrac{-b}{2a} {/eq}. ...
Learn the concept of the axis of symmetry of a geometrical shape. Understand the formula for finding the equations of the axis of symmetry & vertex...
You've got a chance to learn more on finding the axis of symmetry with the assistance of the tutorial, Find the Axis Of Symmetry: Equation, Formula & Vertex. This lesson will walk you through concepts like: The concept of symmetry A parabola's axis of symmetry The quadratic form of...