Question

Which table represents a proportional relationship that has a constant of proportionality equal to 0.8?

Answer 1

Answer:

second table

Step-by-step explanation:

For a proportional relationship, the constant of proportionality k is

k = $\frac{y}{x}$

Choose an ordered pair from each table and evaluate for k

Table 1

using (8, 1 ), then

k = $\frac{1}{8}$ = 0.125 ≠ 0.8

Table 2

using (10, 8 ), then

k = $\frac{8}{10}$ = 0.8

Table 3

using (8, 0.8 ), then

k = $\frac{0.8}{8}$ = 0.1 ≠ 0.8

Table 4

using (10, 20.8 ), then

k = $\frac{20.8}{10}$ = 2.08 ≠ 0.8

Table 2 has a constant of proportionality k = 0.8