Ill give brainliest explain this to me

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.

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Me. i can't figure out this question. give an explanation too. .