The relationship between the coefficient of quadratic term and coefficient of first term and constant term of quadratic function It's the relationship between a, B, C in y = ax'2 + BX = C and function image. Who can give me a full point, that is, what is greater than or less than. No difference~ It's the relationship between the image and a, B, C. for example, when B is less than or greater than 0, what are the characteristics of the image
a> When A0, the intersection of the parabola and the y-axis is in the positive half axis, and there are two intersections between the C0 parabola and the x-axis,
The parabola B ^ 2-4ac = 0 has an intersection with the x-axis