Question

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

On a coordinate plane, a line with negative slope goes through points (negative 20, 10), (0, 0), and (20, negative 10).
(10, –20)
(–30, 20)
(–10, 5)
(35, –20)

Answer 1

(–10, 5)

The line through (0,0) and (20,–10) has slope y/x = –10/20 = –1/2, so a proportional point must satisfy y = (–1/2)x. For (–10,5): 5 = (–1/2)(–10).