Algebra Examples

Find the Start Point Given Mid (0,9) and End (8,6)
,
The midpoint formula is .
Set the equal to the coordinate.
Solve for to get .
Substitute the values for and in to get .
Simplify the right side of .
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Simplify each term.
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Multiply by to get .
Multiply by to get .
Subtract from to get .
Set the equal to the coordinate.
Solve for to get .
Substitute the values for and in to get .
Simplify the right side of .
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Simplify each term.
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Multiply by to get .
Multiply by to get .
Subtract from to get .
The start point is .
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