Respuesta :

Constant = height/ width
Constant  :
1/0.5=2
4/2=2
6/3=2 and so on.
Correct answer is C.2

The given graph is a straight line which is passing through the origin.Any line has a constant rate of increase or decrease.The constant of the equation can be calculated by using the gradient formula when two points are given.

For the points (2,4) and (3,6)

Gradient =[tex]\frac{6-4}{3-2} =\frac{2}{1} =2.[/tex]

Option c .2 is the right option.