Question

A student notices in the table below that as the x-value increases by 5, the y-value decreases by 2. Because there is a pattern, the student has determined that, x is proportional to y.

Do you agree with the student’s claim? Why or why not?

___________

Answer 1

X

5x1=5

5x2=10

5x3=15

5x4=20

5x5=25

Y

20-2=18

18-2=16

16-2=14

14-2=12

X Is by 5 and Y is subtracting by 2