Plz help me

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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.

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

X+y=-4 x-y=2 use elimination with adding and subtraction