SOMEONE HELP ME PLEASE

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.

How can you find the magnitude of a vector, v = < x,y > , where the horizontal change is x and the vertical change is y?

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq