Respuesta :

The expression that represent proportional relationship has the form:

[tex]y=kx[/tex]

where k is the constant of proportionality.

In this case we are looking for a relationship of the form:

[tex]y=-2x[/tex]

or something equivalent. If we multiply both sides by two we get:

[tex]2y=-4x[/tex]

Those two are the relations that fulfill the conditions given.

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