Use the image to answer the question
y
30
28
26
24
22
20
18
16
14
12
10-
8
,,
6
4
2
0+
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Using the points shown in the graph, identify the constant of proportionality for this griph
(1 point)
To identify the constant of proportionality for this graph, we need to find the ratio of the change in the y-coordinate to the corresponding change in the x-coordinate for any two points on the graph. From the given graph, it is clear that the y-coordinate decreases by 2 units for every 1 unit increase in the x-coordinate.
Therefore, the constant of proportionality for this graph is 2.