math

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y=mx t b
ax t by=c
ax t by t c= 0
Need every question for all 3 above
how do u do these im so confused i need help! thanks
8) Through (4,0) and slope of -1
0) through (4,5) with slope -8
10) through (-2,4) with slope 7 over 3
11)through (-2,-1) with slope of 0
13)through (3,2) and parallel to the
line 4x t 5y+7
1

  • math -

    I do not know what you want about y = m x + b
    However I do understand below
    8) Through (4,0) and slope of -1
    y = - x + b
    0 = -4 + b
    b = 4
    so
    y = -x + 4

    0) through (4,5) with slope -8
    y = -8 x + b
    5 = -8*4 + b
    5 = -32 + b
    b = 37
    so
    y = -8 x + 37


    10) through (-2,4) with slope 7 over 3
    y = (7/3) x + b
    3 y = 7 x + 3 b
    3*4 = 7*-2 + 3 b
    12 = - 14 + 3b
    26 = 3 b
    so
    3 y = 7 x + 26


    11)through (-2,-1) with slope of 0
    slope of zero means constant y
    y = -1


    13)through (3,2) and parallel to the
    line 4x t 5y+7
    1
    do not understand

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