SOLUTION: the midpoint og GN is (9,11). One endpoint is N(7,5). Your friend calculates the coordinates of endpoint G as (15,13). What is his error?
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Question 1049156: the midpoint og GN is (9,11). One endpoint is N(7,5). Your friend calculates the coordinates of endpoint G as (15,13). What is his error?
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
G is some unknown endpoint, G(x,y).
Midpoint for GN will need to fit , and .
Solve for x and y.
7+x=18
x=18-7
x=11
-
y+5=22
y=22-5
y=17
-
Correct way to get the point G(11,17) but did not uncover the friend's mistake.
The only common trouble I can see is that the coordinates (15,13) are each four off but in different directions. My only guess is that friend mistakenly added or subtracted 4 to each x & y result.
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