What is the equation of the line whose y intercepts is 3 and slope is 1

The chart below shows the distribution of weeds in yard

What is the area of the triangle 10 13 12

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