The slope of a perpendicular line is the negative reciprocal of the slope of the original line Therefore, the slope of the perpendicular line is The perpendicular line passes through the point (5,3). The equation of the line passing through the points (2, 5) and (4, 3) is y = −x + 7, corresponding to option a (i) the equation of the line A ray of light passing through the point a(1, 2) is reflected at a point b on the x− axis line mirror and then passes through (5, 3)
Then the equation of ab is
WATCH
