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/...
Now check out the points on each side of the axis of symmetry. Pretty cool, huh? Practice Problem Directions: Use the table of values to graph the following function: f(x) = -x2- 6x -1 Then identify the vertex of the function. ...
vertex: (2, –2) axis of symmetry: = 2 opens upward minimum value of –2 domain: {| ∈ R} range: {| ≥–2, ∈ R} -intercepts: 0 and 4 -intercept: 0 MHR Chapter 3 Page 5 of 80Use points and substitution to determine a quadratic function in vertex form, = (–)2 + , for...
Figure 4 shows the graph of the quadratic function written in general form as y=x2+4x+3.y=x2+4x+3. In this form, a=1, b=4,a=1, b=4, and c=3.c=3. Because a>0,a>0, the parabola opens upward. The axis of symmetry is x=−42(1...
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 ...
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. ...
Its lowest or highest point is called the minima or maxima and it is also the vertex, with symmetry on both sides of the graph. The simplest form, or the parent function, is {eq}f(x)=x^{2} {/eq} and it looks like this: Fig.1 Graph of the Quadratic Parent Function The ...