



 
We have two responses for you.  Hi there, If two lines are perpendicular to each other, their slopes are negative reciprocals of each other. This results in their product being 1 if multiplied together. Ex. 2/3 and 3/2 are negative reciprocals of each other The line you were given was written in slopeintercept or y=mx+b form where m is the slope, so the coefficient on x in the equation (1/2) is the slope of the line given to you. Since the perpendicular line must have a slope that is the negative reciprocal of 1/2, you should now be able to determine its slope. Hope this helps, Leeanne  Hi Mykolyn,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 