Question

What is the constant of proportionality between y and x in this graph?

Answer 1

k = 2

Explanation:

the equation representing direct proportion is

y = kx ← k is the constant of proportionality

divide both sides by x , then

k =
`(y)/(x)`

using the point on the line (2, 4 )

k =
`(4)/(2)` = 2