Question

The following graph shows a proportional relationship.

Answer 1

Answer:

$k=2$

Step-by-step explanation:

The constant of proportionality is given as  $k=\frac{y}{x}$ .

Notice that when $x=2$ it follows that $y=4$.

Substitute $x=2$ and $y=4$ into the formula for the constant:

$k=\frac{4}{2}=2$ .

Therefore, the constant is equal to 2.