Question

Which of the following tables represents a linear function?

x −2 −1 0 1 2
y 5 2 1 2 5

x −2 −1 0 1 2
y 5 3 1 −1 −3

x 3 3 0 3 3
y −2 −1 0 1 2

x 0 1 2 3 4
y 0 −1 2 −3 4

Answer 1

during one year in a school, 5 all over 8 of the students had measles, 1 all over 2 had chicken pox and 1 all over 8 had neither what fraction of the school had both measles and chicken pox