Answer:
y = x
Step-by-step explanation:
Given that the quantities vary directly then the equation relating them is
y = kx ← k is the constant of variation
To find k use either of the 2 given points
Using (12, 9), that is x = 12 when y = 9, then
k = = =
y = x ← equation of variation
No
C) 11:12
22:24 which reduced to 11:12
Answer:It
It can be 12, 13, 14 and more up
Is that because 12+7= 19 which is bigger than 18
I'm not sure about my answer