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Graphing linear functions

  1. Sep 7, 2004 #1
    How exactly do you do this, graphing linear functions?

    f(x) = x + 3?

    Can someone explain how to do it.
  2. jcsd
  3. Sep 7, 2004 #2


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    Pick two values of x and use f(x) to find the corresponding values of y. Then plot each pair of (x, y) values on your graph paper and draw a line through those two points.
  4. Sep 7, 2004 #3


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    Often plotting f(x) = 0 and x = 0 are the easiest (assuming they are not the same point). Furthermore when drawing it out a 3rd point helps as a check.
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