Answer:
A
Step-by-step explanation:
The equation [tex]y=kx[/tex] describes the proportional relationship between variables x and y. In this equation, k is the coefficient of proportionality.
Consider all options:
A. For the equation
[tex]y=\dfrac{10}{5}x,[/tex]
the coefficient of proportionality is
[tex]k=\dfrac{10}{5}=2[/tex]
B. For the equation
[tex]y=\dfrac{2}{2}x,[/tex]
the coefficient of proportionality is
[tex]k=\dfrac{2}{2}=1[/tex]
C. For the equation
[tex]y=\dfrac{2}{4}x,[/tex]
the coefficient of proportionality is
[tex]k=\dfrac{2}{4}=\dfrac{1}{2}[/tex]
D. For the equation
[tex]y=\dfrac{22}{22}x,[/tex]
the coefficient of proportionality is
[tex]k=\dfrac{22}{22}=1[/tex]
