Question 120733
First let's find the slope through the points (2,3) and (11,6)


*[invoke slope 2,3,11,6]




Now let's find the slope through the points  (2,3) and (-3,18).



*[invoke slope 2,3,-3,18]



{{{(1/3)(-3)=-3/3=-1}}} Now multiply the two slopes together


Since the product of the two slopes is equal to negative one, the two slopes are perpendicular.



Answer:


So the line through the points (2,3) and (11,6) is perpendicular to the line through the points  (2,3) and (-3,18).