Variation
posted by Soly .
I have few questions that I need checked please and could you help me with the last question?
Write an equation that expreses the relationship. Use k as the constant of varaiation.
1. s varies directly as h
I got: s=kh
2.a varies directly as the square of m.
I got: a=km^2
Determine the constant of variation the stated condition.
6. b varies directly as a, and b=90 when a=6.
this is what I did: 90=k/6, then I multiplied each side by 6, (6)(90)=k(6)/(6)(6), I got k=15.
If y varies directly as x, find the direct variation equation for the situation.
10. y=4 when x=20
This question I don't understand

all right so far,
10) y=kx
k= y/x= 4/20
y= (4/20) x 
Write the equation of direct variation for x = 5 and y = 90.

hei soly,
mey nime is tom atos. i berelive tat des qerstetion es werong! whay u arsk? bevaues dat ern broblem in ern meddle is wierd.
herve fern!
tom atos <333