The distance traveled by a sound wave through a substance is proportional to time. The graph shows this relationship for several substances.

Which substances have a unit rate greater than 2 km/s?

Choose ALL answers that are correct.

A.
cork

B.
glass

C.
lead

D.
titanium

https://static.k12.com/calms_media/media/1557000_1557500/1557378/1/58c80ef907e43f4444fa46ff5a0f076ead084fbf/MS_IMB-1401029-190407.jpg

Question

The distance traveled by a sound wave through a substance is proportional to time. The graph shows this relationship for several substances.
 
Which substances have a unit rate greater than 2 km/s?

Choose ALL answers that are correct.

A.
cork
 
 B.
glass
 
 C.
lead
 
 D.
titanium

https://static.k12.com/calms_media/media/1557000_1557500/1557378/1/58c80ef907e43f4444fa46ff5a0f076ead084fbf/MS_IMB-1401029-190407.jpg

retireed · Answer

Calculate the slopes of the lines to find your answer(s).

welshfella · Answer

the unit rates are given by the slope of the lines

prominer10000 · Answer

so titanium and glass?

prominer10000 · Answer

Those both have a greater unit rate of 2km/s

prominer10000 · Answer

Am I right?

prominer10000 · Answer

@563blackghost @welshfella @retirEEd

welshfella · Answer

yes you are right

retireed · Answer

Yes very good!