二次函数图像

主题

• 绘图
• Parabola
• Quadratic Function
• Vertex

描述

探索曲线的形状如何由于系数的改变而改变。观察每一项的图像（例如：y=bx）来理解他们如何相加产生多项式曲线。通过图像直观感受顶点，方程的根和对称轴的概念。比较不同形式的二次函数曲线。通过焦点和准线定义抛物线。

示范 学习目标

• Describe how changing the coefficients of a quadratic function changes the graph of the function.
• Predict how the graph of a parabola will change if the coefficients or constant are varied.
• Identify the vertex, axis of symmetry, roots, and directrix for the graph of a quadratic equation.
• Use the vertex form of a quadratic function to describe the graph of the function.
• Describe the relationship between the focus and directrix and resulting parabola.
• Predict the graph of a parabola given a focus and directrix.

标准对齐

Common Core - Math