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anonymous

  • 5 years ago

Can anyone help me with this problem. Find an equation of the given pair of point.s Express answer in form of x=a,y=b, or y=mx+b (-7,-7) and (5,5)

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  1. anonymous
    • 5 years ago
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    First you need to find the slope

  2. anonymous
    • 5 years ago
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    (5 - -7)/(5 - -7) (5 + 7)(5 + 7) 12/12 1 So slope = 1

  3. anonymous
    • 5 years ago
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    so the equation is f(x)=x

  4. anonymous
    • 5 years ago
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    Then you use this formula (y - y.) = slope(x - x.) My "." usually have a subscript of 1 but I don't know how to make that happen. The y. and the x. are the x's and y's that you you know. You pick one point and use those values. I am going to use the (5,5) point

  5. anonymous
    • 5 years ago
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    (y - 5) = 1(x - 5) y - 5 = x - 5 add 5 to both sides y = x This is your answer

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