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what is the equation of a line that passes through (1,-4) and (2,7)?

a. y=x+5
b. y=x-5
c. y=11x+8
d. y=11x-5

plz help and exlain how to do it....thanks

  • math -

    (y+4)/(x-1) = (7+4) / (2-1)

    (y+4)/(x-1) = 11

    y + 4 = 11 x - 11

    y = 11 x - 15
    so I get none of he above unless d is a typo

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