There is an unknown number of people at the beginning of lunch . Than each student had 2 friends come sit with them , tripling the amount. Then the entire group divided into 5 groups , and all but one group left and went outside , so only 1/5 of the total students were left in the lunch room

Iam confused on this my self

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0