posted by Marco .
Write the equation of the line passing through the given two points?
a) (3,7) and (4,7)
b) (2,7) and (2,9)
c) (5,-3) and (1,7)
a) the difference in y is zero, m=0
b) x are the same, equation is x=2
c) you have m correct.
THe question was in each: what is the equation of the line.