Answer:
The constant of proportionality is 6
Step-by-step explanation:
Recall the equation for direct variation is [tex]y=kx[/tex] where [tex]y[/tex] varies directly with [tex]x[/tex] and [tex]k[/tex] is the constant of proportionality. If we take any listed coordinate point, we can determine the value of [tex]k[/tex]. I will use (20,120) as an example:
[tex]y=kx\\\\120=k(20)\\\\6=k[/tex]
Therefore, the constant of proportionality is 6
