Homework Help: math

Posted by Anonymous on Monday, February 16, 2009 at 5:47pm.

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 - Damon, Monday, February 16, 2009 at 5:50pm
(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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