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Math Help - Graphing Equations

  1. #1
    Newbie Dried Monkey's Avatar
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    Graphing Equations

    Hey, everyone. I don't understand how to graph a line using an equation such as this: y = -x - 5 How are you supposed to get the correct coordinates?
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  2. #2
    Super Member
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    Jun 2008
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    I'm going to assume you know what a xy-coordinate plane is. If you don't, then please look here:
    Graphing Equations and Inequalities - The coordinate plane - First Glance

    To graph this line, pick any two arbitrary x-coodinates and find their corresponding y-coordinates. Then plot them in a coordinate plan and draw a line that contains these two points.

    I suggest that you pick the x-intercept (the point at which the line crosses the x-axis. i.e. (x, 0) ) and the y-intercept (the point at which the line crosses the y-axis. i.e. (0, y) ). Plot these two points and draw a line that contains them. Make sure that you draw the arrows at each ends of the line.
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