Diego says the sum of half of the first number and double the second number is 14.
Let the first number be x an and the second number be y.
According to Diego,
[tex]\begin{gathered} \frac{x}{2}+2y=14 \\ x+4y=28 \end{gathered}[/tex]So, Diego's two numbers must satisfy the equation
[tex]x+4y=28[/tex]There are many possibilities for Diego's two numbers. All the numbers on the line will be Diego's two numbers.
Two such number can be 0 and 7. It is seen from the graph.
Also 12 and 4 is another such pair.