Question

find the constant of proportionality (k)

x y
3 60
13 260
16 320
18 360

Answer 1

To find the constant of proportionality (k), we can use the formula for direct variation, which is y = kx.

We can choose any pair of values for x and y from the table. Let's choose the first pair (3, 60).

Substitute the values into the formula:
60 = k * 3

Solve for k:
k = 60 / 3
k = 20

Therefore, the constant of proportionality (k) is 20.