Question

Consider the equation y = 4.2x and the table below that represents this relationship.

A 2-column table with 4 rows. Column 1 is labeled x with entries 0, 2, 4, 6. Column 2 is labeled y with entries 0, 8.4, 16.8, 25.2.

The coefficient of the equation or constant of proportionality is

Answer 1

4.2

Reason: y = kx so k = y/x. For example 8.4 ÷ 2 = 4.2, so the constant of proportionality is 4.2.