What are coordinates on a graph?

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What are coordinates on a graph? by Mind Map: What are coordinates on a graph?

1. An ordered pair (x, y) represents a position of a point on a coordinate graph, where x is the number on the x-axis that the point lines up with and y is the number on the y-axis that the point lines up with. The numbers x and y in the ordered pair (x, y) are called coordinates.

2. How to plot coordinates

2.1. A coordinate is shown using two values, separated by a comma with brackets around them. The values show the position on the x axis (horizontal line) and y axis (vertical line). A coordinate represents the exact position of a point.

2.2. Coordinates are plotted on a pair of axes and show the exact position of a point. Each axis is labelled with a scale of numbers, like a number line. The values can be positive or negative. (0,0) is the point where both axes cross. It is called the origin. The position of a coordinate is shown using an X. There are two axes: The x axis is left to right (horizontal) The y axis is bottom to top (vertical)

2.2.1. Independent variable-the independent variable belongs on the x-axis (horizontal line) of the graph

2.2.2. Dependent variable-the dependent variable belongs on the y-axis (vertical line).

3. Plot the coordinate (2,3) The first number in the brackets relates to the x axis. The 2 means move two places to the right, along the x axis. The second number in the brackets relates to the y axis. The 3 means move three places up, along the y axis.

4. Plot the coordinate (-1,2) Remember the first number in the brackets relates to the x axis. The -1 means move one place, but because there is a minus sign in front of it, this time we move one place to the left, along the x axis. The second number in the brackets relates to the y axis. The 2 means move two places up, along the y axis.

5. A distance-time graph shows how far an object has travelled in a given time. Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom). ... A moving object is always 'increasing' its total length moved with time. 'Curved lines' on a distance time graph indicate that the speed is changing.

5.1. Calculating the speed from distance-time graph: speed=distance/time. Always pay attention to the units of the distance and time. Then you will be able to define the unit for speed.