6. Determine whether the data sets show a direct variation. Number Cost
of
Baskets
4
$
2
$12
5
5
$15
7
$21
8
$24
9
9
$27

If is was sunny on thursday, chances are that it will be a sunny if friday depending on the degrees and temperature. your welcome!

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.