Which equation does the graph below represent? a coordinate grid is shown. the x axis values are from negative 5 to positive 5 in increments of 1 for each grid line, and the y axis values are from negative 10 to positive 10 in increments of 2 for each grid line. a line is shown passing through the ordered pairs negative 4, negative 8 and 0, 0 and 4, 8. as fast as

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Which linear inequality is represented by the graph?

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.