the points (7, -19) and (r, 1)lie on a line with slope 5. find the missing coordinate .

Answer 1

5 = (1+19)/(r-7) = "rise over run" = difference in y coordinates divided by corresponding difference in x coordinates = (1- -19)/(r-7)= 20/(r-7)= 5

r-7 =20/5 = 4

r = 4+7 =11

r=11

the two points are (7,-19) and (11, 1)