二、二次函数的图像和性质
抛物线的定义与特点
y = ax<span class="equation-text" data-index="0" data-equation="^2"><span></span><span> </span></span>的图象与性质<br>
开口方向
对称轴
顶点坐标
增减性
y = ax<span class="equation-text" data-index="0" data-equation="^2"><span></span><span>+k </span></span>的图象与性质<br>
y = a(x − M）<span class="equation-text" data-index="0" data-equation="^2"><span></span><span> </span></span>的图象与性质<br>
y = a(x − M）<span class="equation-text" data-index="0" data-equation="^2" contenteditable="false"><span></span><span></span></span>+k 的图象与性质<br>
y = <span class="equation-text" data-index="0" data-equation="ax^2" contenteditable="false"><span></span><span></span></span> + bx + c 的图象与性质
三、二次函数图象画法及关系
用描点法画二次函数 y = ax<span class="equation-text" contenteditable="false" data-index="0" data-equation="^2"><span></span><span></span></span>的图象的一般步骤
二次函数y = <span class="equation-text" data-index="0" data-equation="ax^2" contenteditable="false"><span></span><span></span></span>+ k与y = <span class="equation-text" data-index="1" data-equation="ax^2" contenteditable="false"><span></span><span></span></span>图象间的关系
二次函数y = a(x − M)<span class="equation-text" data-index="0" data-equation="^2" contenteditable="false"><span></span><span></span></span>与y = <span class="equation-text" data-index="1" data-equation="ax^2" contenteditable="false"><span></span><span></span></span>图象间的关系
二次函数y = a(x − M)<span class="equation-text" data-index="0" data-equation="^2 " contenteditable="false"><span></span><span></span></span>+ k（顶点式）与y = <span class="equation-text" data-index="1" data-equation="ax^2" contenteditable="false"><span></span><span></span></span>图象间的关系
