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Math Help - Determine The X-intercept

  1. #1
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    Unhappy Determine The X-intercept

    DETERMINE THE X-INTERCEPT OF:

    y=loga (x-d)





    IN TERMS OF A & D


    i dont know how to find the x intercept in equations with Log...
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  2. #2
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    Quote Originally Posted by clp_53 View Post
    DETERMINE THE X-INTERCEPT OF:

    y=loga (x-d)





    IN TERMS OF A & D
    Well the x intercept is when y = 0.

    So what value of x corresponds to
    log_a(x - d) = 0

    a^{log_a(x - d)} = a^0

    x - d = 1

    x = d + 1

    -Dan
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