Write an expression to relate the number of small squares to the diagram number, n

Give all possible names for the line shown. calculation tip: lines can be written with either point first.

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?