A relation is O the output (y) values of the relation
O the input (x) values of the relation
O a set of points that pair input values with output values
Ox and y values written in the form (x, y)

What situation is an example of an observational study

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.

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?