Question

Variable y varies directly with variable x, and y = 45 when x = 9.

What is value of y when x = 2?

y =

Answer 1

y = k*x and (x,y) = (9,45)

Answer 2

find k

Answer 3

wante sue aleis dmal

Answer 4

y = k*x
45 = k*9
k = 45/9
k = ?

y = kx
Put x = 2 and k

Answer 5

y varies directly see above by @DanJS where k is a constant

Answer 6

y = 5 mate

Answer 7

lol thx

Answer 8

What is value of y when x = 2?
y = kx you found k and you have x substitute and compute y

Answer 9

@Gulivr no that is k

Answer 10

sorry just kidding y = 10 :P

Answer 11

?? confused

Answer 12

see x=9 =1 and y=45 =5 and if x =2 and 2 =1 then y = 10 = 5 :OOO

Answer 13

ok thx

Answer 14

you get me? i simplify

Answer 15

right