match the graph to its equation

1 .

y = (¼) x

2 .

y = 4 x

3 .

y = 2 x

4 .

y = (½) x

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels