Line g passes through points (1, 10) and (7, 3). Line h is perpendicular to g. What is the slope of line h?

Question

Line g passes through points (1, 10) and (7, 3). Line h is perpendicular to g. What is the slope of line h?

Answer 1

slope of h is the negative reciprocal of the slope of g.  This is all you need to know.

Answer 2

Slope of g is (3-10)/(7-1)=-7/6.

h is perpendicular to h, therefore its slope is 6/7.

 

Reminder: Condition od perpendicularity two lines y=ax+b and y=cx+d is  c=-/a (a=-1/c).