How do i write this on a number line please help

Sum is 17 and their difference is 3

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

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