"Joint variation<span>" means "directly, but with two or more variables". Thus, we write as follows:
j </span>α gv
<span>
We insert proportionality constant k, to change it to equality.
j = kgv
We solve k,
1 = k (4)(3)
k =1/12
j = gv/12
j = 8(11)/12
j = 22/3</span>
Answer:
a) x = -1 and y = -10
Step-by-step explanation:
The first part says find the value of y when the value of x is -3. Then the second part of the question is to find the value of x when the value of y is 2.
so lets solve part a)

So answer to part a is x = -1 and y = -10
similarly try the other parts.
The line of best fit would be y = x + 490
Width = 4m
Length = 1.5(4m)
Height = (1.5(4m))/2
1m^3 = 1 + 3/10 kg
• Looking for mass of the air in the room
Answer:
80% of $200 would be $160