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### Grade 4 - Mathematics12.13 Points on a Grid

 Coordinate plane Coordinate plane has two axes. They intersect at right angle and form four quadrants. The two number lines form the axes. The horizontal number line is called the x-axis. The vertical number line is called the y-axis. The center of the coordinate plane is called the origin. It has the coordinates of (0,0). Locations of points on the plane can be plotted when one coordinate from each of the axes are used. This set of x and y values are called ordered pairs. The points in a grid are named by ordered pairs. The first number gives the position to the right of 0. The second number gives the position above 0. The axes along which the ordered pairs are marked are called co-ordinate axes. Example: What is the ordered pair of point A? Answer: (2,1) Directions: Answer the following questions. Also take a graph paper and plot at least 15 points and label the ordered pair.
 Q 1: The location of a point A is named by ordered pair (2,1). The second number of the ordered pair tell you how many unitsup a point is from zeroto the rights a point is from zero Q 2: The location of a point on a grid is named by anlinelocationpointordered pair Q 3: In the figure name the location or ordered pair of point C. (1,3)(2,1)(3,1) Q 4: In the figure name the location or ordered pair of point C. (1,3)(5,4)(5,3) Q 5: In the figure what is the point with ordered pair (4,5). DACB Q 6: ____ are ordered pairs of numbers written within parentheses and used to locate points on coordinate axes.ordered number pairscoordinatescoordinate grid Q 7: A device for locating points in a plane is called ____. It is formed by drawing two number lines at right angles to each other and intersecting at their zero points.coordinatescoordinate gridordered number pair Q 8: The location of a point A is named by ordered pair (4,5). The second number of the ordered pair tell you that it is _____ units up from zero.5(4,5)4 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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