Example 13
Find the equation of the line having slope 2/3 and passes
through (2 ,  5).
Solution :
y  y_{1 }=
m ( x  x_{1})
\ y  (5) =
(x  2)
\ y + 5 =
(x  2)
\ 3 (y + 5) = 2 (x  2)
\ 3y + 15 = 2x + 4
\ 2x + 3y + 11 = 0 ( general form )
Example 14
Find the equation of the line having slope and
which crosses yaxis at 4.
Solution :
y = mx + c
y = x + 4
\ 3y =  4x + 12
\ 4x + 3y  12 = 0 (general form)
