Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar.
ab and bc form a right angle at their point of intersection, b.
if the coordinates of a and bare (14, -1) and (2, 1), respectively, the y-intercept of ab is
and the equation of bc
is y =
x+
if the y-coordinate of point c is 13, its x-coordinate is