From the analytic formula of quadratic function, we can know that the vertex coordinates are (-b/2, (4c-b 2)/4).

According to the linear function, when y = 0, X = C, and because of the coordinate relationship, it is known that the coordinate of the vertex is (c, c/2).

The upper vertex and the lower vertex are a point, that is, the abscissa and ordinate are equal, and a binary linear equation group can be obtained by combining them.

-b/2=c

(4c-b^2)/4)=c/2

Solution: b=- 1, c= 1/2.

After inspection, there is no problem. I wonder if there is a better way. Hope to share!

I also tested it, haha.

We can't make a fuss about our grades. After all, we are here to acquire knowledge.

Help each other.

However, this classmate above, I also have a big mouth. I couldn't help coming without thinking hard. I should take the initiative to think for myself.

I hope you can refuel!