The table shows the proportional relationship between the salvage value and tons of raw steel.

Tons of steel 0 2 4 6 8 10 Salvage value 0 360 720 1,080 1,440 1,800

What is the constant of proportionality in terms of salvage value per ton of raw steel?

1 answer

To find the constant of proportionality, we can choose any two points on the table and find the ratio of the change in salvage value to the change in tons of steel. Let's choose the points (2, 360) and (4, 720).

Change in salvage value = 720 - 360 = 360
Change in tons of steel = 4 - 2 = 2

Constant of proportionality = Change in salvage value / Change in tons of steel
= 360 / 2
= 180

Therefore, the constant of proportionality in terms of salvage value per ton of raw steel is 180.