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anonymous

  • 5 years ago

Determine an equation of the line through the given points. (-3, 5), (1,7).

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  1. anonymous
    • 5 years ago
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    (Y2-Y1)/(X2-X1)=x i believe

  2. anonymous
    • 5 years ago
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    or =m then its y=mx+b

  3. anonymous
    • 5 years ago
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    I am sorry, i'm not getting it.

  4. anonymous
    • 5 years ago
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    I got m=1/2.........i don't know where to go after that.

  5. anonymous
    • 5 years ago
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    This book is Terrible

  6. anonymous
    • 5 years ago
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    Slope is rise over run. Rise = change in the y-coordinate, run=change in the x-coordinate. You have two points. Call them (x1,y1), (x2,y2). So you plug them into (y1-y2)/(x1-x2). It doesn't matter what one you do first, as long as both points are consistent. So you got the slope right, so m is 1/2. :) Then you take a point and plug it in to solve for when x=0. Take (-3,5) and plug it in to y=mx+b 5 = .5 * -3 + b 5 = -1.5 + b 6.5 = b y = .5x + 6.5, if I'm right.

  7. anonymous
    • 5 years ago
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    did you try youtubing it?

  8. anonymous
    • 5 years ago
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    http://tutorial.math.lamar.edu/Classes/Alg/Graphing_Functions.aspx

  9. anonymous
    • 5 years ago
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    very good, now plug in the calculator and see if its correct :D

  10. anonymous
    • 5 years ago
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    Well, I wil YouTube it in a second...thanks..I got 5=1/2x+3

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