What is the standard form of the equation of a circle given by x^2 + y^2 - 18x + 8y + 5 = 0

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Which function is represented by the graph

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.