Question 307806
Write the equation of the line containing the points (-4, 1) and (5, 2).

equation of a line passing through two points x1y1  & x2y2
is given by

y-y1 / x-x1 = y2-y1/x2-x1

x1y1 ( -4, 1)
x2y2 ( 5,2)

y-1 / x-5= 2-1/5-(-4)

y-1 / x-5 = 1 / 9

9(y-1)= 1*(x-5)

9y-9= x-5

9y-x =4 is the equation of the line