Algebra question 2, Thanks if you help

The constant of proportionality is always the where k is the constant of proportionality. additionally, you can find the constant of proportionality by finding the ratio for any point onasap

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal

Yvaries directly as x. y =90 when x=6. find y when x=13