The table shows a proportional relationship between x and y.
x y
0
0
5
−
1
10
−
2
15
−
3
20
−
4
Which equation describes this relationship?
A.
y
=
−
5
x
B.
y
=
−
1
5
x
C.
y
=
x
−
6
D.
y
=
x
−
24
The equation that describes this relationship is:
y = -5x.
This is because the y-values are -5 times the x-values, showing a constant rate of change of -5.