9-1 The Coordinate Plane: To assign coordinates to a point in the plane. To graph an ordered pair of numbers in the coordinate plane.

9-2 Equations in Two Variables: To find solutions for an equation in two variables.

9-3 Graphing Equations in the Coordinate Plane: To graph a linear equation in two variables.

9-4 Graphing a System of Equations: To solve systems of equations using graphs.

9-5 Using Graphs to Solve Problems: To solve problems using graphs.

9-6 Graphing Inequalities: To graph a linear inequality.