Answer:
The constant of proportionality is 28
Step-by-step explanation:
For the constant of proportionality, you'll want to basically find the slope.
The constant of proportionality, k, is defined as:
[tex]k=\frac{y}{x}[/tex]
Thus, we can do this for all three values and reach a conclusion:
[tex]k=\frac{224}{8}[/tex]
[tex]k=\frac{280}{10}[/tex]
[tex]k=\frac{112}{4}[/tex]
In each of these cases, we see that the value of k is 28, therefore, the constant of proportionality is 28
For the second problem, put the cards in their respective places on the number line given.
Hope this helps!
