You are analyzing GSS data, and you are interested in whether or not there is a difference in respondents' number of hours worked last week based on the region of the US in which they live. Information about the variables: Name: Number of hours worked last week Questions associated with this variable: Last week were you working full time, part time, going to school, keeping house, or what

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.