Question

Find the slope of the line that passes through the pair of points. (if an answer is undefined, enter undefined.) (−a + 2, b − 3) and (a + 2, −b)

Answer 1

M=(y2-y1)/(x2-x1)
 (x1,y1)=(−a + 2, b − 3)
 (x2,y2)=(a + 2, −b) 
 then, substituting
 m=((-b)-(b − 3))/((a + 2)-(−a + 2))
 m=(-2b+3)/(2a)
 with
 a=/0