first solve for y:

now, plug in the x-coordinates of the points given and see if you get back the y-coordinates given, if you don't, then that point is not on the line.

example, try (c): plug in x = 0, we get:

since 2 was the y-coordinate given, this point is on the line. thus, this is not the point we are looking for

use the midpoint formula to find R.

2. P is the point ( 3 , 5 ). Q is the point ( -1 , 9 ). R is the midpoint of PQ.

Which of the following does R lie on?

a. y = x + 6

b. y = x + 8

c. y = x - 6

d. y = x - 8

Thanks in advanced to anyone who can help.

recall: the midpoint between two points and is given by:

once you have found R, do a similar procedure as in the previous problem