Theequationoflinetis
y
=
–7
9
x
+ 7
. Line
uisperpendicularto
t . What
istheslopeofline
u ?
Simplify your answer and write it as a proper fraction, improper fraction, or integer.
The slope of a line perpendicular to a line with slope m is -1/m.
Therefore, the slope of line u is -1/(-7/9) = 9/7 or 1 2/7.