NEED HELP POSTED TWICE

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1. Find the slope of the line through the pair of points.
(-1/3,0) and (-1/2,-1/2)
Choices:
-3
1/3
-1/3
3

2. Write in standard form an equation of the line passing through the given point with the given slope.
Slope=8/7; (5,-3)
Choices:
-8/7x+y=-61/7
-8/7x-1=-61/7
-8/7x+y=61/7
8/7x+y=-61/7

  • NEED HELP POSTED TWICE -

    You're more likely to get help if you post what you think are the answers.

  • NEED HELP POSTED TWICE -

    slope = difference in y values/difference in x values
    = (-1/2 - 0)/(-1/2 + 1/3)
    = (-1/2) / (-1/6)
    = (1/2)(-6) = 3

    2. y = (8/7) + b
    sub in the given point
    -3 = (8/7)(5) + b
    multiply by 7
    -21 = 40 + 7b
    b = -61/7

    y = (8/7)x - 61/7 or
    (8/7)x - y = 61/7

    better form would be
    8x - 7y = 61

    btw, none of your answers match with
    (8/7)x - y = 61/7 which is the answer in the form of the other answers.

    I would not consider any of the given answers to be in standard form

    Most text books consider "standard" form to be in the form
    ax + by = c, where a,b, and c are integers.

  • NEED HELP POSTED TWICE -

    My first line of #2 should have been

    2. y = (8/7)x + b

  • NEED HELP POSTED TWICE -

    yeah, i agree with reiny

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