11
9. luc has 1 h of homework to do. he
has assignments to complete for social
studies and math, and a science test
to begin studying for. he spends of
the time completing the social studies
assignment, and of the time on
math. how much time does luc have
left to study for the science test? show
two ways of answering this question.

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.