Answer question 17. explain the steps. (a bit urgent though)

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

Can someone me with these two circle theorem questions asap?

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y