Question

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

-60-40-20 20 40 60 80 ×
x
*
O (-10, 30)
O (30, -15)
O (-30, 10)
10.0
40
30
20
10
20
30-
40-
(60,-20)

Answer 1

Answer: (-30, 10)

Explanation:

A proportional relationship is of the form y=kx for some constant k.

From the point (60, -20), we know that k = -1/3.

So, we are looking for a point where the y coordinate is -1/3 of the x coordinate. This is satisfied by option 3.