The graphs of the value of investment over X years by the value of the investment after five years

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Ineed i been stuck on this question since yesterday

What is the solution to the equation below? 3/x-2+6=square root x-2 +8