Step-by-step explanation: The slope of a line is rise over run. Learn how to calculate the slope of the line in a graph by finding the change in y and the change in x.
(2/5) of (2/3) of students = 4/15 of students study French. Then 1-(4/15) = 11/15 of students do not study French. The ratio you want is (4/15):(11/15) = 4:11
