Homework Help: pre cal

Posted by maxine on Thursday, May 14, 2009 at 9:58pm.

Q1: Find the length and midpoint of segment PQ given P(3,2) and Q(-1,4)

Q2: The midpoint of AB is M(1/2 , 6). Given A(3,7), find the coordinates of B.

pre cal - Reiny, Thursday, May 14, 2009 at 10:08pm
for the points (a,b) and (c,d) the midpoint is ((a+c)/2, (b+d)/2)
so midpoint of PQ = ((3-1)/2,(2+4)/2) = (1,3)

for #2
let B be (a,b)
then isn't (a+3)/2 = 1/2
and (b+7)/2 = 6 ?

solve for a and b

Answer this Question

Related Questions

hialeah miami lakes - given triangle PQR with vertices P(0,-8), Q(4,-9) and R(-2...
geometry - M is the midpoint ofSymbol for segment A B.. Line segment A B, with ...
Geometry - Line segment AB has a midpoint C Help? If AC=17 and AB = 5x-6, then ...
Geometry - Line segment AB has a midpoint C Help? If AC=17 and AB = 5x-6, then ...
Geometry - Line segment AB has a midpoint C Help? If AC=17 and AB = 5x-6, then ...
geometry - Line segment AB has a midpoint C Help? If AC=17 and AB = 5x-6, then ...
math - M is the midpoint of segment AB. Find the coordinates of B given A(-1,4) ...
Math - Could anyone give me an idea of what to do for this problem? ( Like how ...
Geometry - Is it possible for AB = 10, BC = 2x + 5 and AC = 5x, given that point...
Physics - I'm stumped: So bringing it back to the top. Hope that's ok! 2...

For Further Reading

First Name:
School Subject:
Answer: