Question

P, M, and Q are three points on a line. The coordinates of P and M are -8.4 and 2.1 respectively. If M is the midpoint of PQ, what is the coordinate of Q?
A) -3.15 B) -6.3 C) 12.6 D) 10.5

Answer 1

If you draw it out you have point P (-8.4) point M (2.1) and point Q (unknown)
to find the distance between P and M just subtract P from M
once you have that value you can add it to M as the distance between M and Q will be the same as was between P and M

Answer 2

Got it! Thanks

Answer 3

Glad to help!