Order numbers from greater to less -5,-2,0,4

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

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?