Question

the points (0,5),(0,-9)and(3,6)of collinear?

Answer 1

first find slope for (0,5) ,(0,-9) which expression is m=y2-y1/x2-x1 here y2=-9, y1=5 ,x1and x2=0
then note the answer.
secondly find slope for(0,-9) ,(3,6)which is also same as the of first slope expression for this y2=6 ,y1=-9 ,x2=3 ,x1=0 after putting these values in the slope's expression u'll get ur answer...