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The Coordinate Plane Solutions

• The    coordinate plane    is made up of a horizontal number line and a vertical number line.

  • The horizontal number line is the    x-axis   .

  • The vertical number line is the    y-axis   .

• The    orgin    (0, 0) is the name of the point where the x‐ and y-axes intersect.

• The axes separate the coordinate plane into four quadrants. Label each quadrant and identify the x and y axes.

  • Quadrant I : (+x, +y)

  • Quadrant II: (–x, +y)

  • Quadrant III: (–x, –y)

  • Quadrant IV: (+x, –y)

• An x‐ and y‐ coordinate written as a pair (x, y) , form a single    point    on the coordinate plane.
• 
To plot a point on the coordinate plane:

  • Locate where the x-coordinate and y-coordinate    intersect   .

  • Mark the location with a    closed point   .

Example 1