Justify each step in solving the system of equations.

3x−2y=12x+2y=4
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Addition Property of Equality
Multiplication Property of Equality
Substitution Property of Equality
Subtraction Property of Equality
Division Property of Equality
5x=5

x=1

3(1)−2y=1

−2y=−2

y=1

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.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1