The difficulty is moderate.

Comment on this topic to examine the comprehensive application of quadratic function. The eighth chapter of the third grade intensive promotion class 1 lecture specifically explains this topic. The original title of the senior high school entrance examination is very similar to that given in the handout, and the knowledge points and problem-solving methods are exactly the same.

analyse

(1) The first empty formula: (-3) ×+1= 0;

The first blank formula: (2-1) × 3 = 3;

The first empty formula: Let point E be x and get x=, so the number represented by point E is.

(2) As can be seen from the picture, a=0.5, m=0.5, n=2, and let F=(x, y).

After the transformation =(ax+m, ay+n), because f coincides with, so,

Ax+m=x, ay+n=y, substituting a, m, n, you can get, x= 1, y=4.

So the coordinate of f is (1, 4).