11(x-y)
you can distribute here
11x(x) and 11x(y)
11x and 11y
but don't forget the "-" sign
11x-11y is the equivalent to 11(x-y)
1240.64 / 6.4 = 193.85
193.85 rounded is 194
Y=1/2x-4
Perpendicular means it is opposite and the reciprocal. 1/2(4) = 2-4 equals -2.
(4,-2)