Question

What is the constant of proportionality in the direct variation represented on the following graph?

A) 1/4

B) -4

C) 4

D) -1/4

Answer 1

k = 1/4

Explanation:

Answer 2

1) for direct variation
y = kx
(4,1)
1=k*4
k=1/4 Answer

2) also you can find this constant as a slope (m) , because this is a linear function when y=mx+b, when b=0.
slope =rise(change over y) /run (change over x)= 1/4