Question
For the floor plans given in exercise27, determine whether the side through the points (2, 3) and (11, 6) is perpendicular to the side through the points (2, 3) and (-3, 18).
Compute the slopes of the two lines. If the product of the slopes is -1, then te lines are perpendicular.
In your case, the first line has a slope of m = (6-3)/(11-2)= 1/3 and the second line has a slope of
m = (18-3)/(-3 -2) = 15/(-5) = ?
You finish it.
You could also do the problem graphically by plotting the points, drawing the lines and using a protractor.
Compute the slopes of the two lines. If the product of the slopes is -1, then te lines are perpendicular.
In your case, the first line has a slope of m = (6-3)/(11-2)= 1/3 and the second line has a slope of
m = (18-3)/(-3 -2) = 15/(-5) = ?
You finish it.
You could also do the problem graphically by plotting the points, drawing the lines and using a protractor.