You're right on what you've been doing
You have to use implicit derivative
dy / dx = y'
xy^3+y=3x
y^3 + 3xy^2 y' + y' = 3
[3xy^2 + 1) y'= 3 - y^3
3 - y^3
y' = ----------------- <-----------answer
3xy^2 + 1
9.125
Are you sure its not 72/8?
Because then it would be 9
Answer:
10
Step-by-step explanation:
just try to make the lines even and get the answer 10
Umm I think you might have written it wrong.