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anonymous

  • one year ago

What is the equation of a horizontal line passing through the point (−7, 5)?

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  1. Nnesha
    • one year ago
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    |dw:1443657286442:dw|red line is horizontal it's not moving up or down slope = rise over run horizontal line when y value is constant and x values r changing

  2. Nnesha
    • one year ago
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    do you know the formula to find slope ?

  3. anonymous
    • one year ago
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    no

  4. Nnesha
    • one year ago
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    \[\huge\rm \frac{ y_2-y_1 }{ x_2 -x_1 }\] change in y's over change in x's

  5. Nnesha
    • one year ago
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    you need two x's and y's value to find slope so when line is horizontal y values would be the same for y_2 y_1 so when we subtract same number what would we get ?

  6. Nnesha
    • one year ago
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    here is an example |dw:1443657629609:dw| when x=1 y=3 , x=2 y=3

  7. Nnesha
    • one year ago
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    so when we substitute x's nd y's for their values \[\frac{ 3-3 }{ 2-1}=slope\]

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