Math problem in senior high school: When the coefficient AX+BY+CAX+BY+C of a linear equation is 0 and the coefficients A, B and C satisfy any relationship, does this straight line have the following properties? Hello, landlord:

1, when c is not equal to 0,

2，B=0，

3，A=0，

4，B=0，C=0，

5，A=0，C=0，

The first is regardless of the situation. When C=0, the straight line passes through the origin and does not intersect with the two coordinate axes, so it is excluded. When c is not equal to 0, any one of A and B is equal to 0 and will not intersect with the two coordinate axes, but A, B and C are all equal to 0, which is not a straight line. Rule out. Come to think of it, in the first case, you are right, we should discuss C.