Im not too sure what to do in this problem. can someone help asap?

Can somebody me out with this question

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

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.