What are the variables in 4x+y+6=180

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

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.