Help with math asap!
ty in advance :)

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

Which of the following points is collinear with (-2,1) and (0,3)

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?