Two lines are perpendicular, and neither line is horizontal. which of the following is not necessarily true of the lines?

a.
the slopes of the two lines are opposite reciprocals.
b.
one line must have a positive slope.
c.
the y-intercepts are the same.
d.
one line must have a negative slope.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4