The water level of a lake fell by 1 1/2 in. during a 3 3/4 -week-long dry spell. Simplify the complex fraction below to find th
e average rate at which the water level changed every week.
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Given:
M is the midpoint of AB.
M(2,0) and A(-3, 3).
To find:
The coordinates of point B.
Solution:
Midpoint formula:
Let the coordinates of point B are (a,b). Then, using the midpoint formula, we get
On comparing both sides, we get
And,
Therefore, the coordinates of point B are (7,-3).