Don't understand it a number lines galore

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.