Instructions: Determine whether the lines passing through the pairs of points are
parallel, perpendicular or neither.
• Line a: (5,3) and (5,7)
• Line b: (2,7) and (-1,7)
Select one:
O Perpendicular
Neither
Parallel

perpendicular

Step-by-step explanation:

the gradient of line a is (7-3)/(5-5) which is undefined as you cant divide by 0

this means it is a vertical line

the gradient of line b is (7-7)/(-1-2) = 0/-3 = 0

this means it is a horizontal line

vertical and horizontal lines are always perpendicular so lines a and b are perpendicular

Provided by Guathmaths