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The Coordinate Plane. By: Christine Berg Edited By:VTHamilton. Definition. Coordinate Plane. The plane formed when 2 perpendicular number lines intersect at their zero points. Coordinate Plane. The perpendicular number lines form a grid on the plane. X-axis.

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## The Coordinate Plane

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**The Coordinate Plane**By: Christine Berg Edited By:VTHamilton**Definition**Coordinate Plane The plane formed when 2 perpendicular number lines intersect at their zero points**Coordinate Plane**The perpendicular number lines form a grid on the plane**X-axis**The horizontal number line • Positive to the right • Negative to the left**Y-axis**The vertical number line • Positive upward • Negative downward**Origin**Where the x and y axes intersect at their zero points**Quadrants**The x and y axes divide the coordinate plane into 4 parts called quadrants**II**I IV III**Ordered Pair**A pair of numbers (x , y) assigned to a point on the coordinate plane**Ordered Pair**X-coordinate (x , y) Y-coordinate**Plotting a Point**Step 1: Begin at the Origin**Plotting a Point**Step 2: Locate x on the x-axis**Plotting a Point**Step 3: Move up or down to the value of y**Plotting a Point**Step 4: Draw a dot and label the point**In Your Own Words**• What is a coordinate plane? • Define origin • How do you plot a point?

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