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Math Help - Need help please Algebra 2 questions

  1. #1
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    Need help please Algebra 2 questions

    1). Graph the function of y=square root of x-2 end of square root +5 which point lies on the graph?
    2). y= square root of x+6 end of square root +2 which point lies on the graph?
    Thank you!!
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  2. #2
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    Quote Originally Posted by xxsoccerforeverxx View Post
    1). Graph the function of y=square root of x-2 end of square root +5 which point lies on the graph?
    2). y= square root of x+6 end of square root +2 which point lies on the graph?
    Thank you!!
    just guessing here ... is this what you mean?

    y = \sqrt{x-2} + 5
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  3. #3
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    yes, thats what I mean
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  4. #4
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    the graph of y = \sqrt{x-2} + 5 is a transformation of the parent function y = \sqrt{x} ... do you understand how the parent graph changes with each transformation?
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  5. #5
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    Quote Originally Posted by xxsoccerforeverxx View Post
    1). Graph the function of y=square root of x-2 end of square root +5 which point lies on the graph?
    \displystyle y = \sqrt{x-2}+5 lies on which graph?
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  6. #6
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    You have to graph it then see which point lies on the graph, but I don't know how.
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  7. #7
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    Quote Originally Posted by xxsoccerforeverxx View Post
    You have to graph it then see which point lies on the graph, but I don't know how.
    did you know that you can sub in the x-coordinate and see if it works out to the y-coordinate?

    specifically ... (I'm making this up since you provided no information about specific points in your OP) ... say you need to check the point (2,5)

    y = \sqrt{x-2} + 5

    sub in x = 2

    y = \sqrt{2-2} + 5 = 0 + 5 = 5

    now you can say the point (2,5) lies on the curve y = \sqrt{x-2} + 5
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  8. #8
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    Many points lie on this graph, how many are you after?

    Or are you trying to find the domain and range?
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  9. #9
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    just two points didn't say domain and range
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  10. #10
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    Quote Originally Posted by xxsoccerforeverxx View Post
    just two points didn't say domain and range
    read my last post.

    check the points in each equation ... if the equation works, then the point is on the curve.
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