Question

Which equation has a constant of proportionality equal to 1? A. y=10/11x B. y= 7/8x C. y= 3/15x D. y=x

Answer 1

The answer is D.y=x

Explanation:

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Answer 2

An equation is said to have a constant of proportionality if 'x' is a multiple of 'y' or 'y' is a multiple of 'x'.

Now, we have to determine an equation with constant of proportionality as '1'.

1.
`y = (10)/(11)x`

This equation has constant of proportionality as '
`(10)/(11)`'.

2.
`y = (7)/(8)x`

This equation has constant of proportionality as '
`(7)/(8)`'.

3.
`y = (3)/(15)x`

This equation has constant of proportionality as '
`(3)/(15)`'.

4.
`y = x`

This equation has constant of proportionality as '1'.

Option D is the correct answer.