Determine whether each relation is a function. If so provide the domain & range. Width versus area.

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points

How many and of which kind of roots does the equation f(x)=x3−x2−x+1

The sum of two numbers is 0. twice the smaller number subtracted from 3 times the larger number is 10. let x represent the larger number and y represent the smaller number. what is the equation