Answer :
y is directly proportional to x, so:
y = αx
Where α = constant of proportionality
If y = -0.6 and x = 0.24:
-0.6 = α0.24
Solving for α:
α = -0.6/0.24 = -2.5
Now, if y = -31.5 :
-31.5 = -2.5*x
Solving for x:
x = -31.5/-2.5 = 12.6
y is directly proportional to x, so:
y = αx
Where α = constant of proportionality
If y = -0.6 and x = 0.24:
-0.6 = α0.24
Solving for α:
α = -0.6/0.24 = -2.5
Now, if y = -31.5 :
-31.5 = -2.5*x
Solving for x:
x = -31.5/-2.5 = 12.6