Coordinate Graphing Quadrants and Reading Ordered Pairs Warm

Coordinate Graphing Quadrants and Reading Ordered Pairs

Warm Up Graph the integers on a number line. 1. -5 , 2. 0, -3, 3. -4, 1, 4. -1, 4, 5. 6, -8, 2, 5, 2 7, -2 -6, 8 -7, 0 5, -4

Warm Up (Answers) Graph the integers on a number line. 1. 2. 3. 4. 5.

Coordinate Graphing Quadrants and Reading Ordered Pairs

The coordinate plane is formed by the intersection of two number lines.

Origin, the point where the two number lines intersect y-axis, it is the vertical number line x x-axis, it is the horizontal number line

You can graph points on the coordinate plane. A point has two coordinates which form an ordered pair. The x coordinate tells how far to move left or right along the x- axis. (3, -4) The y coordinate tells how far to move up or down along the y-axis.

Example 1 What are the coordinates of point A? The coordinates for point A are (2, 4). A Move up from the x axis. The y coordinate is 4. Start at the origin. Move 2 units to the right. The x coordinate is 2.

Example 2 What are the coordinates of point B? The coordinates for point B are (-5, -2). Move 5 units left from the origin. The x coordinate is -5. B Move down from the x axis to point B. The y coordinate is -2.

Practice Write the ordered pair for each point. A B C D E F (-7, 4) (3, -3) (3, 0) (7, 1) (0, -7) (-6, -4) A D C B F E

The coordinate plane is divided into four quadrants. Quadrant III Quadrant IV

Example 3 In which quadrant is point C located? Quadrant III C

Example 4 In which quadrant is point D located? Quadrant IV D

Practice Identify the quadrant in which each point lies. A B C D E II I IV A D B C E

Where is ordered pair F located? (-7, 0) on x axis Where is ordered pair G located? (0, 4) on y axis

Closure What are the signs for all of the x-coordinates and all of the ycoordinates of the ordered pairs in the second quadrant? x negatives, y positives