It's 3/4 because (y2-y1)/(x2-x1)
Answer:
-4,-1
i have to put 20 character so here is 20 characters
Answer:
k= m/7
Step-by-step explanation:
Answer:
y = 4/5
Step-by-step explanation:
Since, y varies inversely as x.

Answer:
The weight of container C is 2.1kg.
Step-by-step explanation:
This question is solved using a system of equations.
I am going to say that:
x is the weight of container A.
y is the weight of container B.
z is the weight of container C.
The average weight of 3 containers A,B and C is 3.2kg.
This means that the total weight is 3*3.2 = 9.6kg. So

Container A is twice as heavy as container B.
This means that
.
Containers B is 400 g heavier than container C.
400g is 0.4kg. So
This means that
, or 
Replacing y and z as functions of x in the first equation:




Container C

The weight of container C is 2.1kg.