Find the value for \'p\'for which the points (-5,1),(1,p)&(4,-2)are collinear

Find the value for \'p\'for which the points (-5,1),(1,p)&(4,-2)are co

1.	Find the value for \'p\'for which the points (-5,1),(1,p)&(4,-2)are collinear
Answer» p=-1 Use area of triange but remove have from front and add = 0 at last P = -1 Use ar of triangle