Theresa Shotwell's restaurant in Tallahassee, Florida, has recorded the following data for eight recent customers: Customer Minutes from Time Food Ordered Until No. of Trips Number, i Food Arrived (y) to Kitchen by Waitress (x)  10.50 4 2' 12.75 5 3 9.25 3 8.00 2 5 6 07 9.75 11.001 14.00 3 6 8 10.75 5

a) Theresa wants you to graph the eight points (x, y), i = 1, 2,.. 8.

She has been concerned because customers have been waiting too long for their food, and this graph is intended to help her find possible causes of the problem.

b) This is an example of what type of graph?