In this case the answer is very simple. .
We must use the graph to find the answers.
Step 01:
Data
For x = 2 ===> y = 1
Step 02:
Direct variation equation
y = k * x
Constant of proportionality
x = 2 , y = 1
[tex]\text{ y = k }\cdot\text{ x}[/tex]
[tex]\begin{gathered} 1\text{ = k }\cdot\text{ 2 } \\ \frac{1}{2}\text{ = k } \\ \end{gathered}[/tex]
The solution is:
Constant of proportionality = k
k = 1/2
Direct variation equation
y = k * x
y = (1/2) * x
