Answer:
All of them.
Step-by-step explanation:
Although it was hard to understand the equation being posted, but as we see that among almost all of them , there is no equation in which the x is in the denominator or x in in the denominator. Hence there is no inverse relationship seen in any of the equation. Thus in all of them y variables are directly proportional to respective x variables .
Example:
y=2x-3
y=-x+7
They are directly proportional.
y=1/x + 3
xy=4
They are inversely proportional
