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 ...
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 ...
Axis of Symmetry: A parabola has a line of symmetry called the axis of symmetry. It passes through the vertex and divides the parabola into two equal halves.Intercepts: A parabola can intersect the x-axis, the y-axis, or both. The points where it intersects the x-axis are called x-...
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/...
Figure 4 shows the graph of the quadratic function written in general form as y=x2+4x+3y=x2+4x+3. In this form, a=1, b=4a=1, b=4, and c=3c=3. Because a>0a>0, the parabola opens upward. The axis of symmetry is x=−42(1)=−2x=−42(1)=−2. This also makes ...
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 ...
symmetryspectral inclusionThis paper studies Hamiltonian operator matrices with unbounded entries. Their quadratic numerical range is shown to be symmetric with respect to the imaginary axis under certain assumptions. Spectral inclusion properties are found....
Find the vertex and intercepts of y = 3x2 + x − 2 and graph; on your graph, label the vertex and the axis of symmetry.This is the same quadratic as in the last example on the previous page. I already found the vertex; it's the point (−16, −2512)(−61,−1225)....
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. ...
Create a table of values and sketch the graph of each quadratic relation. Use x-vallues: -2, - 1, 0, 1, 2. SHOW YOUR TABLE OF VALUESy=2x^2 相关知识点: 试题来源: 解析 Solutiony=2x^2Direction: Opens UpVertex: (0,0)Focus: (0, 18)Axis of Symmetry: x=0Directrix: y=- 18...