If the 2 given lines are perpendicular, then the product
of the values of their slopes is -1.
The given
equations are y = 1 - x and ty = 3x - 2, so we'll have to put the equation ty = 3x -
2 in the standard from, which is y = mx+n.
Since y is
isolated to the left side, we'll just have to divide by t both
sides:
y = (3/t)*x - (2/t)
The
other line is:
y = -x+1
So,
the slope can be easily determined as m1 = -1.
That means
that the slope of the line y = (3/t)*x - (2/t) has the
value:
m1*m2 = -1
-1*m2 =
-1
-1*(3/t) =
-1
t =
3
The line, perpendicular to
the line y = 1 - x, is now determined, having as equation: y = x -
(2/3).
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