(3, 5) (6, 7) (12, 9) (18, 10) please find domain and range

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Find the values of y: 3y^3(y^2+ 2/3y)=0