Question

Which is the equation to the line passing through points (2, -7) and (5, -1)

Answer 1

using two point equation form . i.e.
y - y1 =(y2-y1)/(x2-x1) * (x-x1)

Answer 2

here suppose x1,y1 as 2,-7 and x2,y2 as 5,-1