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Math Help - solve by grapghing

  1. #1
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    solve by grapghing

    x + y = 4
    x + y = 2


    Line x + y = 4 passes through (0, 4) and (4, 0)
    Line -x + y = 2 passes through (0, 2) and ( -2, 0)


    Not sure if I did this right but base on my findings of this equation I believe that the two lines are parallel to each other therefore there is no solution.
    Am I right?
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  2. #2
    Member Glaysher's Avatar
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    Quote Originally Posted by Patience View Post
    x + y = 4
    x + y = 2


    Line x + y = 4 passes through (0, 4) and (4, 0)
    Line -x + y = 2 passes through (0, 2) and ( -2, 0)


    Not sure if I did this right but base on my findings of this equation I believe that the two lines are parallel to each other therefore there is no solution.
    Am I right?
    No

    First has gradient -1
    Second has gradient 1
    They are perpendicular, cross at (1, 3)
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