Question

Which of the following equation shows a proportional relationship between x and y? 0 y 1-5 O y=x+4 O y ta Whyy=1/3x-5y=x+4y=1/5xy=1/5x+8

Answer 1

To be a proportional relationship betwen x and y, there has to be only this two variables and a number multiplying one or both of them:

$a\cdot y=b\cdot x$

Let a and b be constants. So, from your question, there's only one that meets the requeriments:

$y=\frac{1}{5}x$

The other options have another constant (number) in addition, so the relationship is not proportional anymore.