In the selection of quadratic function, the question only gives the right or wrong of the conclusion. Do you need to find the quadratic function expression and ABC according to the image? Is there any other way to find it? What if the image of a quadratic function of a question is on the X and Y axes, but there are no coordinate points?

In the selection of quadratic function, the question only gives the right or wrong of the conclusion. Do you need to find the quadratic function expression and ABC according to the image? Is there any other way to find it? What if the image of a quadratic function of a question is on the X and Y axes, but there are no coordinate points?

It doesn't need to be solved. The graph itself gives you a lot of information. For example, a quadratic function y = ax & # 178; + BX + C
If a > 0, the function opens up
If A0
If the intersection is negative, then C