y=mx+b so b is 1 which is the value of y when x is 0 first point is (0,1)
the based on the slope... above is y and below is x (on a fraction)
then you you 4 down (cause the - sign goes to 4 in this case.... in can go to 7 too) and 7 right (positive)
so the second point would be (7,-3)
and so on....
