Question

Which representation shows a nonproportional relationship between x and y? 6 4 2 1 FA 11 3 y = -X -9-8-7-6-5-4-3-2-1 334 5 6 7 8 9 5 19 9 y у у -4 -1.6 -5 -1 B - 2 -0.8 -3 -0.2 1 0.4 2. 1.8

Answer 1

proportional relationships have constant ratios.

the graph is a line, so it is a proportional relationship. (A)

the function is in the form y=kx (proportional function) (C)

Find the ratio of the tables: (B)

`m=(-0.8-(-1.6))/(-2-(-4))=0.4=(0.4-(-0.8))/(1-(-2))=(1.2-0.4)/(3-1)=`

D

`m=(-0.2-(-1))/(-3-(-5))=0.4=(1.8-(-0.2))/(2-(-3))=(3-1.8)/(5-2)`

All represent a proportional relationship