Question

Which ordered pair would form a proportional relationship with the point graphed below?

On a coordinate plane, point (60, negative 20) is plotted.
(–10, 30)
(30, –15)
(–30, 10)
(80, –30)

Answer 1

A proportional relationship to (60, −20) has the same ratio y/x = −20/60 = −1/3. Check the choices:

(-30, 10): 10/(-30) = −1/3.

So (-30, 10) is the correct pair.