二次函数是各地中考必考的热点,因此大家务必要熟知图像,而图像的特点又与系数紧密相关,下面我们就一起来探究图像与系数的关系,从而熟练地掌握这部分知识.一、系数a与图像的关系二次函数y=ax~2+bx+c(a≠0)中的二次项系数a决定了抛物线开口方向与对称轴的相对位置.系数a Quadratic function is the hottest point in the examinations for each test, so we must be familiar with the image, and the characteristics of the image and the coefficients are closely related to the following we work together to explore the relationship between the image and the coefficient of proficiency in this part of the knowledge First, The relationship between the coefficient a and the image Quadratic function y = ax ~ 2 + bx + c (a ≠ 0) The quadratic coefficient a determines the relative position of the parabola opening and the axis of symmetry. The coefficient a