PLEASE HELP ME! thank you btw!

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

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.

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq