What is the equation line that passes through the point (-6,-5) and has a slope of -1\2

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?