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Math Help - find a point on the graph of (given) that is closest to the point (given)

  1. #1
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    find a point on the graph of (given) that is closest to the point (given)

    Find the point on the graph of f(x) = the square root of 2x + 10 that is closest to the point (4,0).

    I don't even know where to start with this.
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  2. #2
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    Quote Originally Posted by 21tyri View Post
    Find the point on the graph of f(x) = the square root of 2x + 10 that is closest to the point (4,0).

    I don't even know where to start with this.
    Distance formula: D=\sqrt{(x-x_0)^2+(y-y_0)^2}. Use (4,0) for (x_0,y_0), x for x, and f(x) for y. This is a common question and has been answered before.

    See here
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