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Click the mouse button or press the Space Bar to display the answers. Objective Graph points on a coordinate plane Vocabulary Coordinate plane Two number lines that form right angles and intersect at their zero points Vocabulary Coordinate grid Two number lines that form right angles and intersect at their zero points (coordinate plane) Vocabulary x-axis The horizontal number line x-axis Vocabulary y-axis The vertical number line y-axis Vocabulary Origin The point of intersection of the two number lines origin Vocabulary Ordered pair Any point on the coordinate plane graphed using two numbers (x, y) (3, 2) Vocabulary x-coordinate The first number in the ordered pair (abscissa) (3, 2) Vocabulary y-coordinate The second number in the ordered pair (ordinate) (3, 2) Vocabulary Quadrant The number lines separate the coordinate plane into four sections II I III IV Example 1 Name an Ordered Pair Example 2 Graph an Ordered Pair Example 3 Identify Quadrants Example 4 Identify Quadrants Name the ordered pair for point R graphed below. Start at the origin. R Move left to find the x-coordinate of point R, which is –2. Move up to find the y-coordinate, which is 4. Answer: R (–2, 4) 1/4 Name the ordered pair for point M graphed below. Answer: M (3, –1) 1/4 Graph and label the point M (3, 5) Use a coordinate plane graph Write the point and coordinate pair above the graph Answer: M (3, 5). M (3, 5) Begin at origin Using your pencil point, move 3 units to the right (do not draw a line) Move 5 units up. Draw a dot at the intersection Label dot with letter and coordinate pair 2/4 Graph and label the point G(–2, –4) Answer: 2/4 GEOGRAPHY Use the map of Utah shown below. In which quadrant is Vernal located? Locate axis of coordinate plane I Determine quadrants II Locate Vernal Identify quadrant where Vernal is located Answer: Quadrant I IV III 3/4 GEOGRAPHY Use the map of Utah shown below. In which quadrant is Tremonton located? Answer: Quadrant II 3/4 Name a city from the map of Utah shown below that is located in quadrant IV. Locate axis of coordinate plane I Determine quadrants II Locate city in quadrant IV IV Answer: Bluff III 4/4 * Name a city from the map of Utah shown below that is located in III. Answer: Cedar City 4/4 Assignment Lesson 3:3 Geometry: The Coordinate Plane 9 - 30 All